N170PQ

Part: HINGE — DAMAGED (ZONE 200) · airframe 37,531 hrs · 27,364 cycles

PAX DOOR HINGE ( FUSELAGE SIDE ) LAST LUG HAS SEVERAL INDENTATIONS INTO THE METAL OF THE LUG SIDE WHEN DOOR IS IN THE CLOSED POSITION. HN00208899 (C-CHECK RO 1/23/2025) REPAIRED PASSENGER DOOR HINGE (FUSELAGE SIDE) REF REO 670-53-21-582 REV -G DATED: 2024-02-18 REPAIR TYPE I. SEE CONTINUE CARD FOR DETAILS. COMPLIED WITH SKYWEST TASK CARD: 51-900-1002-SKY.

Part: DOUBLER — CORRODED (ZONE 100) · airframe 37,531 hrs · 27,364 cycles

THE AFT ATG ANTENNA DOUBLER AT MATING SURFACE ON EXTERIOR HAS FRETTING CORROSION. (C-CHECK RO 1/23/2025) REMOVED AND REPLACED INSTALLED NEW AFT ATG ANTENNA EXTERNAL DOUBLER FS 1031.00 - FS 1051.30, STGR24R - STGR27 REF AIRCELL DOCUMENT NUMBER D12942-20110 REV. B, DATED 06/13/2011 AND CRJ 900 SRM 51-42-20-001-001-A01. COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY. LEAK CHECK GOOD.

Part: FLOOR SUPPORT — CORRODED (ZONE 200) · airframe 37,531 hrs · 27,364 cycles

RH FLOOR SILL IS CORRODED FS349-357 (C-CHECK RO 1/23/2025) REPAIRED RH FLOOR SILL FS349-357 PER REO 690-53-21-1858 REV-- DATED 2025-01-10, CRJ-900 SRM 51-21-16-001-001-A01/TR51-0068, CRJ 900 SRM 51-21-11-001-001-A01, CRJ-900 SRM 51-42-13-001-001-A01, AND CRJ900 SRM 51-42-06-001-001 A01 REV 38 DATED JULY 25/2020 AND DWG SH690-32170 REV AD. COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY. LEAK CHECK GOOD. SEE CONTINUATION CARD FOR DETAILS.

Part: STRINGER CLIP — MISSING (ZONE 100) · airframe 37,531 hrs · 27,364 cycles

STR18R CLIP (PN MM670-35365-003) TO FS1051 FRAME IS MISSING / NOT INSTALLED (C-CHECK RO 1/23/2025) DRILLED AND LOCATED FASTENER HOLES ON NEW CLIP P/N: MM670-35365-003S REF CRJ-900 SRM 51-40-11-001-001-A01, INSTALLED NEW CLIP AT FS1051 AND STR18R REF CRJ-900 SRM 51-42-21-001-001-A01 AND DWG. MM670-35041 REV. Y. COMPLIED WITH 51-900-1002-SKY. WIIEGHT .01 LBS REF SCALE TUC1755 CAL DATE 31-DEC25

Part: LATCH — CRACKED (ZONE 100) · airframe 37,531 hrs · 27,364 cycles

RIGHT TRU BAY DOOR LANDING AFT LATCH CRACKED AS MARKED (C-CHECK RO 1/23/2025) REMOVED AND INSTALLED NEW RH TRU LANDING IAW ALL STEPS OF REO 690-53-11-1901 REV--, DATED 2024-12-12, DWG CC670-33040 REV-G, CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-13-001-001-A01. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: SHEAR TIE — CORRODED (ZONE 100) · airframe 37,531 hrs · 27,364 cycles

CORROSION ON FS661+90 FRAME ATTACH FLANGE BETWEEN STR 26L €“ 26R (C-CHECK RO 1/23/2025) REPAIRED FRAME ATTACH FLAGE BETWEEN FS661+90 STGR 26L-26R REF REO 690-53-31-897 REV -- DATED 2025-01-08.. COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY. LEAK CHECK GOOD. SEE CONTINUATION CARD FOR DETAILS.

Part: SKIN — DENTED (ZONE 100) · airframe 37,531 hrs · 27,364 cycles

EXTERNAL FUSELAGE JUST OUTSIDE OF FWD JACK PAD.DENT IS VISIBLE,IN BETWEEN STR26L AND STR 27 (C-CHECK RO 1/23/2025) DRESS-BACK DENT PER REO 670-51-00-085 REV -A DATE 2017-08-23. FOUND OUT OF LIMITS. REPAIRED EXTERNAL FUSELAGE JUST OUTSIDE OF FWD JACK PAD PER 690-53-21-1849, REV --, DATE: 2024-12-26. COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY. LEAK CHECK GOOD. SEE CONTINUATION CARD FOR DETAILS.

Part: FLOORBEAM — CHAFED (ZONE 200) · airframe 37,531 hrs · 27,364 cycles

THE 280 CROSSBEAM BETWEEN BL0 AND LBL9 IS CHAFED IN LOWER RADIUS. (C-CHECK RO 1/23/2025) REMOVED AND INSTALLED NEW LH CROSSBEAM AT FS 280.00 BETWEEN BL0 AND LBL9 REF CRJ900 SRM 51-42-06-001-001-A01, CRJ900 SRM 51-42-21-001-001-A01, CRJ900 SRM 51-42-22-001-001-A01 AND DWG CC670-34010 REV -K. SEE CONTINUE CARD FOR WORK PERFORMED. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: RETAINER — DAMAGED (ZONE 100) · airframe 37,531 hrs · 27,364 cycles

FWD CARGO- FWD DOOR- REMOVED LOWER SEAL RETAINER FOUND MULTIPLE DAMAGED FASTENER HOLES AND HOLES UPSIZED (C-CHECK RO 1/23/2025) REPAIRED FWD CARGO DOOR PER REO 690-52-35-465 REV.-- DATED 2024-12-26. COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY. LEAK CHECK GOOD. SEE CONTINUATION CARD FOR DETAILS. REPAIR CONSISTED OF OVERSIZE FASTENERS ONLY, WEIGHT CHANGE IS NEGLIGIBLE.

Part: TRANSCOWL — WORN (ZONE 400) · airframe 37,531 hrs · 27,364 cycles

R/H UPPER TRANSCOWL OTBD SLIDER IS WORN (C-CHECK RO 1/23/2025) PERFORMED DISPOSITION FOR BLENDED CHAFE DAMAGE TO RH UPPER TRANSCOWL OUTBOARD SLIDER REF REO 690-54-21-531 REV -- DATED: 2024-12-25. COMPLIED WITH SKYWEST TASK CARD: 51-900-1002-SKY.

Part: HOUSING — CHAFED (ZONE 800) · airframe 37,531 hrs · 27,364 cycles

AFT CARGO DOOR HANDLE HOUSING IS CHAFED IN TWO LOCATIONS (AS MARKED) (C-CHECK RO 1/23/2025) REMOVED AND REPLACED AFT CARGO DOOR HANDLE HOUSING REF CRJ 900 SRM 51-42-21-001-001-A01 AND DWG CC670-38702 REV F. COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY. LEAK CHECK GOOD. OP CHECK GOOD. SEE CONTINUATION CARD FOR DETAILS.

Part: SKIN — SCRATCHED (ZONE 200) · airframe 37,531 hrs · 27,364 cycles

COMPLY WITH SCHEDULED MAINTENANCE CODE: RA77491-690-53-21-1499 170PQ MXCODEID74254-PR - FOUND SCRATCH DAMAGE JUST AFT OF MCD 3/32" AFT OF FS 349 AND 3/16" ABOVE STGR 6L. COMPLIED WITH REO 690-53-21-1499 REV A DATED 2024-04-29. PERMANENT REPAIR DUE WITHIN 6950 FLT HRS WHICH WILL TAKE UNTIL NEXT C CHECK, PART NUMBER: - , SERIAL NUMBER: 15170, POSITION: (C-CHECK RO 1/23/2025) REPAIRED PAX DOOR SEAL STRIKER AT FS349 BETWEEN STGR 3L AND 6L PER REO 670-53-22-001 REV J DATED 2016-11-10 AND REO 690-53-21-1860 REV -- DATED 2025-01-10 . LEAK CHECK GOOD. SEE CONTINUATION CARD FOR DETAILS.COMPLIED WITH 51-900-1002-SKY

Part: DOOR FRAME — GOUGED (ZONE 100) · airframe 37,531 hrs · 27,364 cycles

COMPLY WITH SCHEDULED MAINTENANCE CODE: RA29701-690-53-21-032 170PQ-DTI - MAIN AVIONICS DOOR CUT-OUT FROM APPROX. F.S. 364.00 TO F.S. 394.00 HAS SEVERAL GOUGES & CORROSION ON FWD & AFT SIDES & ON L/H & R/H SIDE.REMOVED ALL DAMAGE REF 690-53-21-032. PERFORM DVI PER NDT MANUAL REF INSP PER NDTM 51-20-009 PART 1, PART NUMBER: - , SERIAL NUMBER: 15170, POSITION: (C-CHECK RO 1/23/2025) BLENDED OUT DAMAGE AT AVIONICS DOOR SURROUND SKIN INNER SURFACE BETWEEN FS364.00 TOFS394.00 AND STGR25RTO STGR25L RE CRJ900 SRM 53-21-01-201-006-A01. REPAIRED PER REO 690-53-21-032 REV -- DATED 2008/03/07. LEAK CHECK GOOD. SEE CONTINUATION CARD FOR DETAILS. COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY

Part: UNKNOWN — CRACKED (UNKNOWN) · airframe 35,066 hrs · 24,731 cycles

CRACKED LINTEL STGR3L FS280 (C-CHECK RO 5/21/2023) REPAIRED LINTEL STGR3L FS280 REF REO 670-53-21-493 REV-D, 2015-07-10PERFORMED LEAK CHECK IAW CRJ 900 AMM 21-31-00-910-801-A02 LEAK TEST GOOD.COMPLIED WITH 51-900-1002-SKY

Part: DOUBLER — CORRODED (FLOOR MOUNT) · airframe 31,717 hrs · 21,797 cycles

THE GALLEY #1 HAS A BADLY CORRODED DOUBLER BEHIND THE FLOOR MOUNT FITTING (FOOT) IN ITS INBD EDGE AT THE AFT LOCATION. (C-CHECK RO 9/8/2021) REMOVED THE GALLEY #1 CORRODED DOUBLER LOCATED BEHIND THE FLOOR MOUNT FITTING (FOOT) IN ITS INBD EDGE AT THE AFT LOCATION AND INSTALLED A SERVICEABLE DOUBLER (P/N=9335071-1) REFERENCING CRJ 900 SRM 51-41-02-001-001-A01 AND CRJ 900 SRM 51-41-04-01-001-A01. TORQUE WRENCH USED: TUC#8613, CAL DUE 31-OCT-21

Part: FLOOR SUPPORT — CRACKED (BS 333-349 RBL28) · airframe 31,717 hrs · 21,797 cycles

FOUND FLOOR SUPPORT ANGLE CRACKED AT RBL 28 BETWEEN FS 333 TO FS 349 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED WITH NEW SUPPORT ANGLE AT RBL 28 BETWEEN FS333 AND FS349 REF. CRJ-900 SRM, 51-42-10-001-001-A01 AND CRJ-900 SRM, 51-42-06-001-001-A01

Part: SUPPORT — CORRODED (BS 1051) · airframe 31,717 hrs · 21,797 cycles

R/H SUPPORT COMMON TO FS1051.30 CROSSBEAM IS CORRODED (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED RH SUPPORT COMMON TO FS 1051.3 CROSSBEAM WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG MM670-35360 REV A. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: ANGLE — DAMAGED (PAX DOOR) · airframe 31,717 hrs · 21,797 cycles

PAX DOOR BOTTOM ANGLE HAS MIS LOCATED HOLES (C-CHECK RO 9/8/2021) REMOVED AND REPLACED PAX DOOR BOTTOM ANGLE REF. CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-13-001-001-A01.

Part: DRAG ANGLE — MISLOCATED (PAX DOOR) · airframe 31,717 hrs · 21,797 cycles

PAX DOOR AFT DRAG ANGLE HOLES MISLOCATED (C-CHECK RO 9/8/2021) REMOVED AND REPLACED PAX DOOR AFT DRAG ANGLE REF. CRJ900 SRM 51-42-06-001-001-A01.

Part: ATTACH FITTING — GOUGED (RT WING) · airframe 31,717 hrs · 21,797 cycles

RH WING FLAP HINGEBOX ATTACH FITTING AT WS54.55 IS GOUGED NEAR AFT INBOARD BOLT. (MARKED) (C-CHECK RO 9/8/2021) REMOVED DAMAGE FROM RH WING FLAP HINEBOX ATTACH FITTING AT WS54.55. REF CRJ900 SRM 51-12-00-001-001-A01. RECEIVED AND COMPLIED WITH ALL STEPS OF REO 690-57-21-393 REV-- DATED 2021-07-27. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. COMPLIED WITH TASK CARD 51-900-1002-SKY

Part: ATTACH ANGLE — CORRODED (BS 349-364 S26R) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 26R ATTACH ANGLE CORRODED BETWEEN FS349.00 AND FS364.00 (C-CHECK RO 9/8/2021) CORROSION ON MAIN AVIONICS BAY STGR 26R ATTACH ANGLE BETWEEN FS349 AND FS364 FOUND TO BE OUT OF LIMITS REF. CRJ-900 SRM, 53-21-23-101-003-A02. REMOVED AND REPLACED MAIN AVIONICS BAY STGR 26R ATTACH ANGLE BETWEEN FS349 AND FS364 REF. CRJ-900 SRM, 51-42-21-001-001-A01, CRJ-900 SRM, 51-42-06-001-001-A01 AND DWG SH670-32050 REV J. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: ATTACH BRACKET — CRACKED (RT WING) · airframe 31,717 hrs · 21,797 cycles

RH SLAT TRACK CANNISTER 1-3 ATTACH BRACKET INSIDE FUEL PANEL 651AB IS CRACKED (MARKED) (C-CHECK RO 9/8/2021) PERFORMED PERMANENT REPAIR ON R/H SLAT TRACK CANISTER 1-3 ATTACH BRACKET. REF. MHIRJ REO 670-57-42-577 REV. €“ DATED: 2016-12-02. SEE CONTINUATION CARD FOR DETAILS OF WORK PERFORMED. / COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY / LEAK CHECK GOOD

Part: SKIN — CORRODED (BS 360-364 S26LR) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY INNER SKIN FROM FS360.00 TO FS364.00 BETWEEN STR 26L AND STR 26R HAS SPOTS OF CORROSION (C-CHECK RO 9/8/2021) CORROSION ON INNER SKIN FROM FS360.00 TO FS364.00 BETWEEN STR26L AND STR 26R WAS REMOVED AND FOUND TO BE WITHIN LIMITS AND FINISH RE-APPLIED AS REQUIRED REF. REO 690-53-21-1410 REV. -- DATED 2021-07-29. COMPLIED WITH 51-900-1002-SKY

Part: DOUBLER — CORRODED (BS 333-349) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY FWD DRAIN MAST DOUBLER FROM FS333.00 TO FS349.00 BETWEEN STR 25R AND STR 24R CORRODED (C-CHECK RO 9/8/2021) FOUND CORROSION TO BE OUT OF LIMITS ON MAIN AVIONICS BAY FWD DRAIN MAST DOUBLER FROM FS333.00 TO FS349.00 BETWEEN STGR 25R AND STGR 24R REF. CRJ-900 SRM, 53-21-01-101-006-A04. REMOVED AND REPLACED FWD DRAIN MAST DOUBLER FROM FS333.00 TO FS349.00 BETWEEN STGR 25R AND STGR 24R REF. CRJ-900 SRM, 51-42-06-001-001-A01 AND DWG SH670-32250 REV NC. COMPLIED WITH SKY CARD 51-900-1002-SKY.PRESSURE LEAK CHECK GOOD.

Part: SUPPORT ANGLE — CORRODED (PAX DOOR AREA) · airframe 31,717 hrs · 21,797 cycles

PAX DOOR AFT SUPPORT ANGLE IS CORRODED ON MULTIPLE ELEMENTS (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED PAX DOOR AFT SUPPORT ANGLE WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01, CRJ900 SRM 51-42-21-001-001-A01, AND DWG 601R31702 REV N. COMPLIED WITH TASK CARD 51-900-1002-SKY. PRESSURE CHECK GOOD. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED

Part: CLEAT — CORRODED (BS 320) · airframe 31,717 hrs · 21,797 cycles

PAX DOOR€”CLEAT COMMON TO FRAME AT FS320.00AND LWR CHANNEL IS HEAVILY CORRODED (C-CHECK RO 9/8/2021) REMOVED CORRODED CLEAT AND INSTALLED NEW CLEAT P/N 601R319034-2. REF: CRJ900 SRM 51-42-06-001-001-A01, DWG 600-31902, REV: Y. TASK CARD 51-900-1002 COMPLETED.

Part: STRINGER SPLICE — CORRODED (BS 333 S26R) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 26R SPLICE CORRODED AT FS333 (C-CHECK RO 9/8/2021) SPLICE AT FS333.00 STGR 26R FOUND TO BE OUT LIMITS REF. CRJ-900 SRM, 53-21-03-101-002-A04. REMOVED AND REPLACED WITH NEW STGR 26R SPLICE AT FS333 REF. CRJ-900 SRM, 51-42-06-001-001-A01. COMPLIED WITH TASK CARD 51-900-1002-SKY.PRESSURE LEAK CHECK GOOD.

Part: STIFFENER — CRACKED (BS 280 BULKHEAD) · airframe 31,717 hrs · 21,797 cycles

CRACKED STIFFENER FOUND AT FLOOR LEVEL ON AFT SIDE OF FS 280.0 BULKHEAD LOWER WEB RBL 9.0 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED BULKHEAD WEB STIFFENER AT AFT SIDE OF FS280 LOWER WEB AT FLOOR LEVEL RBL9.0. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG CC670-34010 REV J. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: INTERCOSTAL — CRACKED (DOOR) · airframe 31,717 hrs · 21,797 cycles

DD1 FWD INTERCOSTAL HAS VISIBLE CRACK (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CRACKED DD1 INTERCOSTAL WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG 601R31702 REV-N. COMPLIED WITH TASK CARD 51-900-1002-SKY. PRESSURE CHECK GOOD. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: INTERCOSTAL — CRACKED (DOOR) · airframe 31,717 hrs · 21,797 cycles

DD1 AFT INTERCOSTAL HAS VISIBLE CRACK (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CRACKED INTERCOSTAL WITH NEW FROM STOCK UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG 601R31702 REV N. COMPLIED WITH TASK CARD 51-900-1002-SKY. PRESSURE CHECK GOOD. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: STRINGER — CORRODED (BS 280-310 S26R) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 26R CORRODED BETWEEN FS280.00 AND FS310.00 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED WITH NEW MAIN AVIONICS BAY STR 26R BETWEEN FS280.00 AND FS310.00 REF CRJ-900 SRM 51-42-21-001-001-A01 AND DWG#SH670-31630 REV K.COMPLIED WITH 51-900-1002-SKY.PRESSURE LEAK CHECK GOOD.

Part: BULKHEAD WEB — CORRODED (BS 280) · airframe 31,717 hrs · 21,797 cycles

R/H BULKHEAD WEB AT FS 280.0 CORRODED ON AFT SIDE AT FLOOR LEVEL COMMON TO CROSSBEAM (C-CHECK RO 9/8/2021) REMOVED AND REPLACED RH BULKHEAD LOWER WEB FROM FS280 REF. CRJ-900 SRM, 51-42-06-001-001-A01, CRJ-900 SRM, 51-42-13-001-001-A01, AND CRJ-900 SRM, 53-11-10-201-004-A01. COMPLIED WITH TASK CARD 51-900-1002-SKY, SEE CONTINUE CARD FOR FURTHER DETAILS.

Part: STRIKER — CORRODED (SERVICE DOOR) · airframe 31,717 hrs · 21,797 cycles

FOUND CORROSION ON LOWER FITTING SEAL STRIKER P/N: SH670-31412-7 AT SERVICE DOOR STGR 18R BETWEEN FS 349.00 - FS333.00 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED LOWER FITTING SEAL STRIKER P/N SH670-31412-7 AT SERVICE DOOR STGR 18R. REF. CRJ900 SRM 51-42-06-001-001-A01 AND DWG# SH670-31950 REV. Y SHEET 8 AND 11. / COMPLIED WITH TASK CARD 51-900-1002-SKY (CL600-2D24) STRUCTURAL MAJOR REPAIR (**RII**), PRESSURE LEAK CHECK GOOD

Part: ANGLE — CORRODED (GALLEY DOOR AREA) · airframe 31,717 hrs · 21,797 cycles

GALLEY DOOR SURROUND AREA, LOWER AREA, 4EA. ANGLES, ATTACHED TO WEB FLOOR PROTECTOR PLATES ARE CORRODED. (C-CHECK RO 9/8/2021) REMOVED AND REPLACED 4EA. CORRODED ANGLES (PN: SH670-31982-1) ATTACHED TO WEB FLOOR PROTECTOR PLATES AT GALLEY DOOR SURROUND.REF CRJ900 SRM 51-42-06-001-001-A01 & DWG SH670-31950 REV. Y. COMPLIED WITH 51-900-1002-SKY

Part: STRINGER — CORRODED (BS 280-310 S24R) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 24R CORRODED BETWEEN FS280.00 AND FS310.00 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED WITH NEW MAIN AVIONICS BAY STR 24R BETWEEN FS280.00 AND FS310.00 REF CRJ-900 SRM 51-42-06-001-001-A01,SRM 51-42-21-001-001-A01 AND DWG# SH670-31630 REV K.COMPLIED WITH 51-900-1002-SKY.PRESSURE LEAK GOOD.

Part: STRINGER — CORRODED (BS 333 S24R) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 24R SPLICE AT FS333.00 CORRODED (C-CHECK RO 9/8/2021) REMOVED & REPLACED WITH NEW MAIN AVIONICS BAY STR 24R SPLICE AT FS333.00 REF CRJ-900 SRM 51-42-06-001-001-A01 AND DWG SH670-32420 REV E.PRESSURE LEAK CHECK GOOD GOOD.COMPLIED WITH 51-900-1002-SKY

Part: STRINGER — CORRODED (BS 280-310 S19R) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 19R CORRODED BETWEEN FS280.00 AND FS310.00 (C-CHECK RO 9/8/2021) REMOVED & REPLACED MAIN AVIONICS BAY STR 19R CORRODED BETWEEN FS280.00 AND FS310.00 REF REO 690-53-21-1412 REV -- DATED:2021-08-06. COMPLIED WITH 51-900-1002-SKY. NO LEAKS NOTED.

Part: STRINGER — CORRODED (BS 319-333 S22R) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 22R CORRODED BETWEEN FS319.70 AND FS333.00 (C-CHECK RO 9/8/2021) REMOVED & REPLACED WITH NEW MAIN AVIONICS BAY STR 22R BETWEEN FS319.70 AND FS333.00 REF CRJ-900 SRM 51-42-06-001-001-A01 AND DWG#SH670-31630 REV K. COMPLIED WITH 51-900-1002-SKY.PRESSURE LEAK CHECK GOOD.

Part: STRINGER — CORRODED (BS 333-349 S24R) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 24R CORRODED BETWEEN FS333.00 AND FS349.00 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED WITH NEW MAIN AVIONICS BAY STR 24R BETWEEN FS333.00 AND FS349.00 REF CRJ-900 SRM 51-42-21-001-001-A01,SRM 51-42-06-001-001-A01 & DWG#SH690-31350 REV M. PRESSURE LEAK CHECK GOOD. / COMPLIED WITH 51-900-1002-SKY

Part: STRINGER — CORRODED (BS 333 S23R) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 23R SPLICE AT FS333.00 CORRODED (C-CHECK RO 9/8/2021) REMOVED AND REPLACED WITH MAIN AVIONICS BAY STR 23R SPLICE AT FS333.00 REF CRJ-900 SRM 51-42-06-001-001-A01 AND DWG#SH670-32420 REV E. COMPLIED WITH 51-900-1002-SKY. PRESSURE LEAK CHECK GOOD.

Part: STRINGER — CORRODED (BS 319-333 S23R) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 23R CORRODED BETWEEN FS319.70 AND FS333.00 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED MAIN AVIONICS BAY STR 23R BETWEEN FS280 TO FS333.00 REF CRJ-900 SRM 51-42-06-001-001-A01,SRM 51-42-21-001-001-A01 AND DWG#SH670-31630 REV K.PRESSURE LEAK CHECK GOOD.COMPLIED WITH 51-900-1002-SKY

Part: DOOR FRAME — CORRODED (BS 693-813) · airframe 31,717 hrs · 21,797 cycles

* RH EMERGENCY EXIT DOOR INTERNAL SURROUND STRUCTURE FS693.10 THRU FS813.70 LOWER DIAPHRAM IS CORRODED MULTABLE AREA'S. FLAGGED (C-CHECK RO 9/8/2021) REMOVED CORROSION ON RH EMER EXIT DOOR INTERNAL SURROUND STRUCTURE FS693.10 THROUGH FS813.70 LOWER DIAPHRAGM REF. CRJ-900 SRM, 51-21-06-001-001-A01. FOUND TO BE OUT OF LIMITS REF. CRJ-900 SRM, 53-41-23-101-001-A02. COMPLIED WITH REO 690-53-41-281 REV --, DATED: 2021-07-25. WITHIN LIMITS, ALL STEPS COMPLIED WITH, COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: STRINGER — CORRODED (BS 613-629 S23L) · airframe 31,717 hrs · 21,797 cycles

INTERCOSTAL AT STGR 23L, STA 613-629 CORRODED. (C-CHECK RO 9/8/2021) REMOVED CORROSION ON INTERCOSTAL AT STGR 23L, STA 613-629 . REF: CRJ-900 SRM 51-21-06-001-001-A01. CORROSION WENT THRU 100% EXFOLIATED. REMOVED AND REPLACED INTERCOSTAL. REF: CRJ-900 SRM 51-42-06-001-001-A01, CRJ-900 SRM 51-42-21-001-001-A01 AND DWGS.SH670-33750 REV Y/ SH670-33083 REV A. RESTORED FINISH AND APPLIED CIC. REF: CRJ-900 [TR51-0068] SRM 51-21-16-001-001-A01 AND CRJ-900 SRM 51-21-11-001-001-A01.TASK CARD 51-900-1002-SKY COMPLIED WITH, SEE CONTINUATION CARD

Part: ATTACH ANGLE — CRACKED (BS 280) · airframe 31,717 hrs · 21,797 cycles

F.S.280 INTERCOSTAL ATTACH ANGLE AT RBL12.00 FOUND CRACKED. (C-CHECK RO 9/8/2021) REMOVED CRACKED ATTACH ANGLE AND INSTALLED NEW FS280.00 INTERCOSTAL ATTACH ANGLE AT RBL 12. REF. CRJ 900 SRM 51-42-21-001-001-A01 AND DWG CC670-34010 REV J / COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY

Part: COAMING — WORN (RT NACELLE) · airframe 31,717 hrs · 21,797 cycles

*RH LOWER COWL 443AB LATCH DOOR COAMING HAS WEAR ON INNER SIDE AND BENDS ALONG EDGES (C-CHECK RO 9/8/2021) PERFORMED PERMANENT REPAIR BY REPLACING RH LOWER COWL 443AB LATCH DOOR COAMING, DOUBLER AND PADS AND COMPLYING WITH REO 670-54-21-1207 REV A DATED 2015-08-27 STEPS 1-18 CONFIG. FIG.4 . SEE CONTINUATION CARD FOR DETAILS. COMPLIED WITH TASK CARD 51-900-1002-SKY

Part: COAMING — WORN (LT NACELLE) · airframe 31,717 hrs · 21,797 cycles

*LH UPPER COWL 433AT COAMING HAS BENDS AND WEAR (C-CHECK RO 9/8/2021) REMOVED AND REPLACED LH UPPER COWL 433AT COAMING REF. CRJ-900 SRM,51-42-06-001-001-A01, CRJ-900 SRM, 51-42-13-001-001-A01 AND DWG CN624-2003 REV AG. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR FURTHER DETAILS.

Part: FLOORBEAM — CORRODED (BS 280 RBL2-6) · airframe 31,717 hrs · 21,797 cycles

CORROSION FOUND ON RH FLOOR BEAM FS280.00 P/N: CC670-34094-2 UNDER ANGLE FLOOR PANEL SUPPORT (C-CHECK RO 9/8/2021) REMOVED CORROSION FROM RH FLOOR BEAM AT FS280, RBL2-RBL6 REF. CRJ-900 SRM, 53-00-00-10-001-A01 FOUND TO BE OUT OF LIMITS. REPLACED WITH NEW FLOOR BEAM AT FS280 REF. CRJ-900 SRM, 53-11-10-201-004-A01. COMPLIED WITH TASK CARD 51-900-1002-SKY, SEE CONTINUE CARD FOR FURTHER DETAILS.

Part: STRINGER SPLICE — CORRODED (BS 333 S25L) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAYT STR 25L SPLICE AT FS333 HAS CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED STR 25L SPLICE AT FS333 WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH670-32420 REV E. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED.

Part: STRINGER — CORRODED (BS 333-349 S22L) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 22L BETWEEN FS333-FS349 HAS CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED WITH NEW STR 22L BETWEEN FS333 TO FS372. REF CRJ900 SRM 53-00-03-201-001-A02 AND CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH690-31350 REV M. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED.

Part: STRINGER — CORRODED (BS 295-310 S24L) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY AT STR 24L BETWEEN FS295-FS310 HAS CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED STR24L BETWEEN FS295 AND FS310 WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01 AND DWG SH670-31630 REV K. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED.

Part: STRINGER — CORRODED (BS 333-349 S25L) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 25L LONGERON BETWEEN FS333-FS349 HAS CORROSION (C-CHECK RO 9/8/2021) DAMAGE FOUND TO BE OUT OF LIMITS ON STGR 25L LONGERON BETWEEN FS333-FS349 REF. CRJ-900 SRM, 53-21-03-101-006-A04. REMOVED AND REPLACED WITH NEW STGR 25L LONGERON BETWEEN FS333-FS349 REF. CRJ-900 SRM, 51-42-06-001-001-A01, CRJ-900 SRM, 51-42-21-001-001-A01 AND DWG SH670-32050 REV J. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED.

Part: STRINGER — CORRODED (BS 310-319 S25L) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY AT STR 25L BETWEEN FS310 - FS319 HAS CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED STR25L BETWEEN FS310 AND FS319 WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01 AND DWG SH670-31630 REV K. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED.

Part: STRINGER — CORRODED (BS 333 S22L) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 22L SPLICE AT FS333 HAS CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED STR 22L SPLICE AT FS333 WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH670-32420 REV E. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED.

Part: FLOOR SUPPORT — CORRODED (BS 1000-1031) · airframe 31,717 hrs · 21,797 cycles

*FLOOR BEAM LOCATED AT LBL27 HAS SEVERAL AREAS OF CORROSION FROM FS1000 TO FS1031. LOCATIONS MARKED WITH RED GREASE PENCIL. (C-CHECK RO 9/8/2021) PERFORMED FLOORBEAM SPLICE REPAIR AT LBL27 BETWEEN FS977 AND FS1038. REF. CRJ900 SRM 53-00-41-201-001-A03, SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01 AND DWG# MM69-35041 REV. AB / COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY (CL600-2D24) STRUCTURAL MAJOR REPAIR (**RII**)

Part: FLOOR SUPPORT — CORRODED (BS 1000-1031) · airframe 31,717 hrs · 21,797 cycles

*FLOOR BEAM LOCATED AT LBL9 HAS SEVERAL AREAS OF CORROSION FROM FS1000 TO FS1031. LOCATIONS MARKED WITH RED GREASE PENCIL. (C-CHECK RO 9/8/2021) PERFORMED PERMANENT REPAIR TO FLOOR BEAM LBL9 AT FS1000.00 TO FS1031.00. REF. CRJ 900 SRM 53-00-41-201-001-A03 / SEE CONTINUATION CARD FOR DETAILS OF WORK PERFORMED. / C/W SKYWEST TASK CARD 51-900-1002-SKY

Part: FLOORBEAM — CORRODED (BS 1031 RBL 9) · airframe 31,717 hrs · 21,797 cycles

*FLOOR BEAM LOCATED AT RBL9 HAS CORROSION AT FS1031. LOCATION MARKED WITH RED GREASE PENCIL. (C-CHECK RO 9/8/2021) PERFORMED PERMANENT REPAIR TO FLOOR BEAM RBL9 AT FS1000.00 TO FS1031.00. REF. CRJ 900 SRM 53-00-41-201-001-A03 / SEE CONTINUATION CARD FOR DETAILS OF WORK PERFORMED. / C/W SKYWEST TASK CARD 51-900-1002-SKY

Part: ATTACH BRACKET — CORRODED (DOOR AREA) · airframe 31,717 hrs · 21,797 cycles

DD5 FWD ATTACH BRACKET IS CORRODED (C-CHECK RO 9/8/2021) REMOVED AND REPLACED DD5 FWD ATTACH BRACKET WITH NEW FROM STOCK UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG 601R31702 REV-N. COMPLIED WITH TASK CARD 51-900-1002-SKY, PRESSURE CHECK GOOD. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: ANGLE — CORRODED (DOOR AREA) · airframe 31,717 hrs · 21,797 cycles

DD7A ANGLE HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED DD7A ANGLE WITH NEW UNIT. REF CRJ900 SRM 51-42-21-001-001-A01 AND DWG 601R317040 REV -C. COMPLIED WITH TASK CARD 51-900-1002-SKY, PRESSURE CHECK GOOD. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: INTERCOSTAL — CORRODED (DOOR AREA) · airframe 31,717 hrs · 21,797 cycles

DD6 FWD INTERCOSTAL HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED & REPLACED WITH NEW DD6 FWD INTERCOSTAL THAT HAD MULTIPLE AREAS OF CORROSION REF CRJ-900 SRM 51-42-06-001-001-A01 AND BOMBARDIER DWG#601R31702 REV -N.PRESSUE LEAK CHECK GOOD. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: FRAME — CORRODED (BS 313) · airframe 31,717 hrs · 21,797 cycles

FRAME AT FS313.56 BETWEEN DD4 AND DD5 HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED & REPLACED WITH NEW FRAME AT FS313.56 BETWEEN DD4 AND DD5 THAT HAD MULTIPLE AREAS OF CORROSION REF CRJ-900 SRM 51-42-06-001-001-A01 AND BOMBARDIER DWG#601R31702 REV -N.COMPLIED WITH 51-900-1002-SKY. PRESSURE LEAK CHECK GOOD.

Part: INTERCOSTAL — CORRODED (PAX DOOR) · airframe 31,717 hrs · 21,797 cycles

DD6 MID INTERCOSTAL HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED DD6 MID INTERCOSTAL WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01, CRJ900 SRM 51-42-21-001-001-A01, DWG 601R31702 REV -N. COMPLIED WITH TASK CARD 51-900-1002-SKY. OPERATIONAL TEST CHECKED GOOD, PRESSURE CHECKED GOOD. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED

Part: FRAME — CORRODED (BS 320) · airframe 31,717 hrs · 21,797 cycles

FRAME AT FS320.00 HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REPAIRED FRAME AT FS320.00 ON PAX DOOR TO COMPLY REO 690-52-11-701 REV -- DATE 2021-07-16 STEP.1-5 (SEE CONTINUATION SHEET FOR FURTHER DETAILS)

Part: STIFFENER — CORRODED (PAX DOOR) · airframe 31,717 hrs · 21,797 cycles

PAX DOOR FWD WEB PANEL SIDE PANEL STIFFENER HEAVILY CORRODED (C-CHECK RO 9/8/2021) REMOVED AND REPLACED PAX DOOR FWD WEB PANEL SIDE PANEL STIFFENER REF. CRJ900 SRM 51-42-06-001-001-A01.

Part: INTERCOSTAL — CORRODED (PAX DOOR) · airframe 31,717 hrs · 21,797 cycles

DD4 AFT INTERCOSTAL HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED DD4 AFT INTERCOSTAL WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG 601R31702 REV -N. COMPLIED WITH TASK CARD 51-900-1002-SKY. PRESSURE CHECK GOOD. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: INTERCOSTAL — CORRODED (DOOR AREA) · airframe 31,717 hrs · 21,797 cycles

DD7 FWD INTERCOSTAL HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED WITH NEW DD7 FWD INTERCOSTAL HAD MULTIPLE AREAS OF CORROSION REF CRJ-900 SRM 51-42-06-001-001-A01 AND DWG#601R31702 REV -N.COMPLIED WITH 51-900-1002-SKY PRESSURE LEAK CHECK GOOD.

Part: ATTACH BRACKET — CORRODED (DOOR AREA) · airframe 31,717 hrs · 21,797 cycles

DD7 FWD ATTACH BRACKET IS CORRODED (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CRACKED DD7 FWD ATTACH BRACKET WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG 601R31702 REV -N. COMPLIED WITH TASK CARD 51-900-1002-SKY. PRESSURE CHECK GOOD, SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: INTERCOSTAL — CORRODED (DOOR AREA) · airframe 31,717 hrs · 21,797 cycles

DD5 FWD INTERCOSTAL HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED DD5 FWD INTERCOSTAL REF. CRJ-900 SRM, 51-42-06-001-001-A01 AND DWG 601R31702 REV -N. COMPLIED WITH TASK CARD 51-900-1002-SKY, PRESSURE CHECK GOOD. SEE CONTINUE CARD FOR FURTHER DETAILS.

Part: ATTACH BRACKET — CORRODED (DOOR AREA) · airframe 31,717 hrs · 21,797 cycles

DD6 FWD ATTACH BRACKET IS CORRODED (C-CHECK RO 9/8/2021) REMOVED AND REPLACED DD6 FWD INTERCOSTAL ATTACH BRACKET REF CRJ-900 SRM 51-42-06-001-001-A01 AND BOMBARDIER DWG#601R31702 REV -N. COMPLIED WITH 51-900-1002-SKY.PRESSURE LEAK CHECK GOOD.

Part: RETAINER — CORRODED (PAX DOOR SEAL) · airframe 31,717 hrs · 21,797 cycles

CORROSION ON PAX DOOR TOP SEAL RETAINER (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED PAX DOOR TOP SEAL RETAINER WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG 600-31902 REV -Y. COMPLIED WITH TASK CARD 51-900-1002-SKY. PRESSURE CHECK GOOD. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: DRAG ANGLE — CORRODED (PAX DOOR) · airframe 31,717 hrs · 21,797 cycles

PAX DOOR FWD DRAG ANGLE HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED PAX DOOR FWD DRAG ANGLE REF. CRJ900 SRM 51-42-06-001-001-A01.

Part: FORMER — CORRODED (BS 320) · airframe 31,717 hrs · 21,797 cycles

FORMER AT FS320.163 HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED & REPLACED WITH NEW FORMER AT FS320.163 THAT HAD MULTIPLE AREAS OF CORROSION REF CRJ-900 SRM 51-42-06-001-001-A01 AND BOMBARDIER DWG#601R31702 REV -N.COMPLIED WITH 51-900-1002-SKY. PRESSURE LEAK CHECK GOOD.

Part: CLEAT — CORRODED (BS 320) · airframe 31,717 hrs · 21,797 cycles

CLEAT COMMON TO FRAME AT FS320.00 AND DD6 INTERCOSTAL CORRODED (C-CHECK RO 9/8/2021) FOUND SEVERE CORROSION ON COMPLETE DD6 FWD INTERCOSTAL ATTACH CLEAT, NO ALLOWABLE LIMITS REF. CRJ-900 SRM, 52-11-06-001-001-A01. FOUND TO BE OUT OF LIMITS. REMOVED AND REPLACED DD6 FWD INTERCOSTAL ATTACH CLEAT REF. CRJ-900 SRM, 51-42-06-001-001-A01 AND DWG 601R31702 REV N. COMPLIED WITH TASK CARD 51-900-1002-SKY, SEE CONTINUE CARD FOR FURTHER DETAILS.

Part: FITTING — CORRODED (PAX DOOR FRAME) · airframe 31,717 hrs · 21,797 cycles

PAX DOOR SURROUND STRUCTURE FWD CLOSING FITTING IS CORRODED. (C-CHECK RO 9/8/2021) CORROSION ON PAX DOOR SURROUND STRUCTURE FWD CLOSING FITTINGS IS OVER FASTENER HOLES AND MULTIPLE CROSS SECTIONS AND IS OUT OF LIMITS REF CRJ900 SRM 53-21-23-101-001-A02. / REMOVED AND INSTALLED REPLACEMENT FITTING WITH REPLACEMENT HARDWARE REF DRW. SH670-31810 REV AE AND REF CRJ900 SRM 51-42-06-001-001-A01 / . COMPLIED WITH 51-900-1002-SKY

Part: FITTING — CORRODED (PAX DOOR FRAME) · airframe 31,717 hrs · 21,797 cycles

PAX DOOR SURROUND STRUCTURE AFT CLOSING FITTING IS CORRODED. (C-CHECK RO 9/8/2021) EVAL CORROSION IS OVER FASTENER HOLES AND MULTIPLE CROSS SECTIONS OUT OF LIMITS. REF CRJ900 SRM 51-21-23-101-001-A02. REMOVED AND REPLACED FITTING WITH NEW FROM STOCK UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH670-31810 REV AE. SEE CONTINUE CARD FOR DETAILS OF WORK PEREFORMED. COMPLIED WITH TASK CARD 51-900-1002-SKY

Part: STRINGER — CORRODED (BS 319-333 S26L) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 26L CORRODED BETWEEN FS319.70 AND FS333.00 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED STR 26L BETWEEN FS319.70 AND FS333.00 WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01 AND DWG SH670-31630 REV K. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED.

Part: FRAME — CORRODED (BS 294 S25L-R) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY FS295.00 FRAME CORRODED BETWEEN STR 25L AND STR 25R (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED FRAME AT FS295.00 BETWEEN STR25L AND STR25R WITH NEW UNIT. REF CRJ900 SRM 53-00-06-201-001-A03 CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01 AND DWG SH670-31630 REV K. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.NO LEAKS NOTED.

Part: FRAME — CORRODED (BS 319 S25L-23R) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY FS319.70 FRAME CORRODED BETWEEN STR 25L AND STR 23R (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED FRAME AT FS319.70 BETWEEN STR 21L - 23R WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH670-31630 REV K. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.PRESSURE LEAK CHECK GOOD NO LEAKS NOTED AT THIS TIME.

Part: STRINGER — CORRODED (BS 310-319) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 25R CORRODED BETWEEN FS310.00 AND FS319.70 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED STR 25R BETWEEN FS310.00 AND 319.70 WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01 AND DWG SH670-31630 REV K. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED.

Part: DIAPHRAGM — CORRODED (WASTE WATER) · airframe 31,717 hrs · 21,797 cycles

FWD WATER-WASTE SURROUND STRUCTURE LOWER DIAPHRAGM CORRODED (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED FWD WATER-WASTE SURROUND STRUCTURE LOWER DIAPHRAGM WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH670-32280 REV H. COMPLIED WITH TASK CARD 51-900-1002-SKY. LEAK CHECK GOOD SEE CONTINUE CARD FOR DETAILS.

Part: DRAG ANGLE — CRACKED (PAX DOOR) · airframe 31,717 hrs · 21,797 cycles

PAX DOOR AFT DRAG ANGLE HAS VISIBLE CRACK€”REPLACE AFT DRAG ANGLE (C-CHECK RO 9/8/2021) REMOVED AND REPLACED PAX DOOR AFT DRAG ANGLE REF. CRJ900 SRM 51-42-06-001-001-A01.

Part: DOUBLER — CORRODED (BS 295-310) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY TCAS ANTENNA DOUBLER BETWEEN FS295.00 AND FS310.00 CORRODED (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED TCAS ANTENNA DOUBLER WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01 AND DWG SH670-30023 REV G. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED.

Part: ANGLE — CORRODED (PAX DOOR FRAME) · airframe 31,717 hrs · 21,797 cycles

PAX DOOR SURROUND STRUCTURE AFT CAP ANGLE PART# SH670-31821-4 IS CORRODED (C-CHECK RO 9/8/2021) CORROSION ON PAX DOOR SURROUND STRUCTURE AFT CAP ANGLE IS OVER FASTENER HOLES AND MULTIPLE CROSS SECTIONS AND IS OUT OF LIMITS REF CRJ900 SRM 51-21-23-101-001-A02. / REMOVED AND INSTALLED REPLACEMENT HARDWARE AND INSTALLED REPLACEMENT ANGLE WITH REPLACEMENT HARDWARE REF DRW. SH670-31810 REV AE AND REF CRJ900 SRM 51-42-06-001-001-A01 / . COMPLIED WITH 51-900-1002-SKY

Part: COAMING — GOUGED (AFT CARGO DOOR) · airframe 31,717 hrs · 21,797 cycles

AFT BAGGAGE BAY DOOR LOWER COAMING IS GOUGED ON AFT SIDE. (C-CHECK RO 9/8/2021) REMOVED AND REPLACED AFT BAGGAGE BAY DOOR LOWER COAMING IAW DWG MM670-35070 REV. E AND CRJ900 SRM 51-41-02-001-001-A01. TASK CARD 51-900-1002-SKY COMPLIED WITH. LEAK CHECK GOOD

Part: STRINGER — CORRODED (BS 310-319 S27) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 27 CORRODED BETWEEN FS310.00 AND FS319.70 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED STR 27 BETWEEN FS310.00 AND FS319.70 WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01 AND DWG SH670-31630 REV K. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR WORK PERFORMED. NO LEAKS NOTED.

Part: ANGLE — CORRODED (PAX DOOR FRAME) · airframe 31,717 hrs · 21,797 cycles

PAX DOOR SURROUND STRUCTURE FWD CAP ANGLE PART# SH670-31821-3 IS CORRODED (C-CHECK RO 9/8/2021) CORROSION ON PAX DOOR SURROUND STRUCTURE FWD CAP ANGLE IS OVER FASTENER HOLES AND MULTIPLE CROSS SECTIONS AND IS OUT OF LIMITS REF CRJ900 SRM 51-21-23-101-001-A02. / REMOVED AND INSTALLED REPLACEMENT ANGLE WITH REPLACEMENT HARDWARE REF DRW. SH670-31810 REV AE AND REF CRJ900 SRM 51-42-06-001-001-A01 / . COMPLIED WITH 51-900-1002-SKY

Part: DIAPHRAGM — CORRODED (WATER WASTE) · airframe 31,717 hrs · 21,797 cycles

FWD WATER-WASTE SURROUND STRUCTURE UPPER DIAPHRAGM CORRODED (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED FWD WATER-WASTE SURROUND STRUCTURE UPPER DIAPHRAGM WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH670-32280. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED.

Part: ATTACH ANGLE — CORRODED (BS 349-364 S26L) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY STR 26L ATTACH ANGLE CORRODED BETWEEN FS349.00 AND FS364.00 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED MAIN AVIONICS BA STR 26L ATTACH ANGLE BETWEEN FS349.00 AND FS364.00 REF CRJ900 SRM 51-42--21-001-001-A01, CRJ900 SRM 51-42-*06-001-001-A01 AND DWG SH670-32050 REV J COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY

Part: FRAME — CORRODED (BS 310 S23L-25R) · airframe 31,717 hrs · 21,797 cycles

MAIN AVIONICS BAY FS310.00 FRAME CORRODED BETWEEN STR 23L AND STR 25R (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED FS310.00 FRAME BETWEEN STR23L AND STR25R WITH NEW UNIT. REF CRJ900 SRM 51-42-21-001-001-A01 AND CRJ900 SRM 53-00-06-201-006-A01. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED. / COMPLIED WITH 51-900-1002-SKY

Part: ANGLE — CORRODED (FUSELAGE) · airframe 31,717 hrs · 21,797 cycles

FWD WATER-WASTE SURROUND STRUCTURE IMPACT ANGLE CORRODED (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED FWD WATER-WASTE SURROUND IMPACT ANGLE WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH670-32280 REV H. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED.

Part: ROLLER — WORN (RT SLAT TRACK) · airframe 31,717 hrs · 21,797 cycles

RH WING SLAT TRACK 1-2 AFT O/B SLAT ROLLER IS WORN. (C-CHECK RO 9/8/2021) REPLACED RH WING SLAT TRACK 1-2 AFT O/B ROLLER WITH NEW/SERVIABLE UNIT REF CRJ-900 AMM 27-81-44-400-801-A01. SEE ATTACHED CONTINUATION CARD FOR DETAILS OF WORK PERFORMED. OPS TEST GOOD AT THIS TIME.

Part: SEAT TRACK — CORRODED (BS 677-720) · airframe 31,717 hrs · 21,797 cycles

R/H SIDE SEAT RAIL CHANNEL HAS CORROSION IN MULTIPLE SPOTS APPROX FS 677.00 TO FS 720.00 (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK CHANNEL P/N: SH690-37554-4 BETWEEN FS677- FS720 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE 28-FEB-22 / ORDERED NEW HARDWARE REQUIRED

Part: HINGE — GOUGED (RT AILERON) · airframe 31,717 hrs · 21,797 cycles

* RH AILERON CENTER, INBD HINGE HAS MULTABLE GOUGES. FLAGGED (C-CHECK RO 9/8/2021) REPAIRED GOUGES ON RH AILERON CENTER HINGE REF. REO 690-57-51-229 REV. -- DATED 2021-07-21 ALL STEPS COMPLIED WITH. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: ROLLER — WORN (RT SLAT TRACK) · airframe 31,717 hrs · 21,797 cycles

RH WING SLAT TRACK 3-2 FWD I/B SLAT ROLLER IS WORN. (C-CHECK RO 9/8/2021) RELPACED RH WING SLAT TRACK 3-2 FWD I/B SLAT SIDE ROLLER WITH NEW/SERVICABLE UNIT REF CRJ-900 AMM 27-81-44-400-803-A01. SEE ATTACHED CONTINUATION CARD FOR DETAILS OF WORK PERFORMED. OPS TEST GOOD AT THIS TIME.

Part: SEAT TRACK — CORRODED (BS 677-720) · airframe 31,717 hrs · 21,797 cycles

L/H SIDE SEAT RAIL CHANNEL HAS CORROSION IN MULTIPLE SPOTS APPROX FS 677.00 TO FS 720.00 (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK CHANNEL P/N: SH690-37554-3 BETWEEN FS677- FS720 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE 28-FEB-22 / ORDERED NEW HARDWARE REQUIRED

Part: SEAT TRACK — CORRODED (BS 743-763) · airframe 31,717 hrs · 21,797 cycles

R/H SIDE SEAT RAIL CHANNEL HAS CORROSION IN MULTIPLE SPOTS APPROX FS 743.00 TO FS 763.00 (C-CHECK RO 9/8/2021) INSTALLED NEW TRACK CHANNEL P/N: SH690-37555-952 BETWEEN FS743- FS763 REF CRJ-900 AMM 53-00-49-400-801-A07, USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE: 28-FEB-22 / ORDERED NEW HARDWARE REQUIRED

Part: ROLLER — WORN (RT SLAT TRACK) · airframe 31,717 hrs · 21,797 cycles

RH WING SLAT TRACK 2-2 FWD I/B SLAT ROLLER IS WORN. (C-CHECK RO 9/8/2021) REPLACED RH WING SLAT TRACK 2-2 FWD I/B SIDE ROLLER WITH NEW/SERVICABLE UNIT REF CRJ-900 AMM 27-81-44-400-802-A01. SEE ATTACHED CONTINUATION CARD FOR DETAILS OF WORK PERFORMED. OPS TEST GOOD AT THIS TIME.

Part: ROLLER — WORN (LT SLAT TRACK) · airframe 31,717 hrs · 21,797 cycles

LH WING SLAT TRACK 2-2 FWD O/B SLAT ROLLER IS WORN. (C-CHECK RO 9/8/2021) REMOVED AND REPLACED L/H WING SLAT TRACK 2-2 FWD O/B SLAT ROLLER. REF. CRJ 900 AMM 27-81-44-400-802-A01. OPS CHECK GOOD. SEE CONTINUATION CARD FOR DETAILS OF WORK PERFORMED.

Part: ROLLER — WORN (LT SLAT TRACK) · airframe 31,717 hrs · 21,797 cycles

LH WING SLAT TRACK 1-2 FWD I/B SLAT ROLLER AND AFT O/B ARE WORN. (C-CHECK RO 9/8/2021) REPLACED LH WING SLAT TRACK 1-2 FWD I/B SIDE ROLLER AND AFT O/B SIDE ROLLER WITH NEW/SERVIABLE UNITS REF CRJ-900 AMM 27-81-44-400-801-A01. SEE ATTACHED CONTINUATION CARD FOR DETAILS OF WORK PERFORMED. OPS TEST GOOD AT THIS TIME.

Part: SEAT TRACK — CORRODED (BS 677-720) · airframe 31,717 hrs · 21,797 cycles

R/H SIDE SEAT RAIL FROM FS 677.00 TO FS 720.00 HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK P/N: SH690-36284-1 BETWEEN FS677- FS720 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE 28-FEB-22 / ORDERED NEW HARDWARE REQUIRED

Part: CROSSBEAM — CORRODED (BS 1051 RBL 39) · airframe 31,717 hrs · 21,797 cycles

R/H CROSS BEAM AT FS 1051.30 & RBL 39.00 HAS CORROSION NEXT TO FLOOR SILL. (C-CHECK RO 9/8/2021) CORROSION ON RH CROSS BEAM AT FS1051.30 AND RBL 39.00 NEXT TO FLOOR SILL REF. CRJ-900 SRM, 51-21-06-001-001-A01. COMPLIED WITH REPAIR REF. REO 690-53-61-1027 REV --, DATED: 2021-08-24. COMPLIED WITH TASK CARD 51-900-1002-SKY, PRESSURE ON LEAK CHECK GOOD.

Part: SEAT TRACK — CORRODED (BS 783-847) · airframe 31,717 hrs · 21,797 cycles

R/H SIDE SEAT RAIL FROM FS 783.00 TO FS 847+16 HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) RECEIVED NEW SEAT TRACK P/N: SH670-36260-5 / INSTALLED NEW SEAT TRACK P/N: SH670-36260-5 BETWEEN FS783- FS847+16 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE: 28-FEB-22 / ORDERED NEW HARDWARE REQUIRED

Part: PCU — LEAKING (RT ELEVATOR) · airframe 31,717 hrs · 21,797 cycles

* RH ELEVATOR PCU #2 LEAK (C-CHECK RO 9/8/2021) REMOVED AND REPLACED RH ELEVATOR PCU #2 WITH SERVICEABLE UNIT. REF CRJ900 AMM 27-33-01-000-801-A01 AND 27-33-01-400-801-A01. OPS TESTS AND LEAK CHECK GOOD. COMPLIED WITH SKYWEST TASK CARD 27-320-1003-SKY.

Part: SKIN — CORRODED (BS 1144-1162) · airframe 31,717 hrs · 21,797 cycles

*CORROSION AROUND DRAIN HOLE ON AIRCRAFT EXTERIOR SKIN BETWEEN FS 1144.00 - 1162.00, STGR 21R - 22R (C-CHECK RO 9/8/2021) REMOVED CORROSION AND EVALUATED REPAIR. REPAIR FOUND TO BE WITHIN LIMITS OF MHI RJ REO 690-53-61-1023 REV. -- DATED: 2021-07-20. COMPLIED WITH TASK CARD 51-900-1002-SKY / SEE CONTINUATION CARD FOR DETAILS OF WORK PERFORMED

Part: SEAT TRACK — CORRODED (BS 849-976 LBL9) · airframe 31,717 hrs · 21,797 cycles

CABIN FLOOR SEAT TRACK SECTION FS 849.00 TO FS 976.00, LBL 9 HAS SEVERAL AREAS OF CORROSION. (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CABIN FLOOR SEAT TRACK PART # SH690-37987-1 SECTION FS 849.00 TO FS 976.00, LBL 9 REF. CRJ900 AMM 53-00-49-400-801-A07, TUC8607 DUE DATE: 28-FEB-22.

Part: PCU — LEAKING (RT ELEVATOR) · airframe 31,717 hrs · 21,797 cycles

* RH ELEVATOR PCU #1 LEAK (C-CHECK RO 9/8/2021) REMOVED AND REPLACED RH ELEVATOR PCU #1 WITH SERVICEABLE UNIT. REF CRJ900 AMM 27-33-01-000-801-A01 AND 27-33-01-400-801-A01. OPS TESTS AND LEAK CHECK GOOD. COMPLIED WITH SKYWEST TASK CARD 27-320-1003-SKY.

Part: PCU — LEAKING (LT ELVATOR) · airframe 31,717 hrs · 21,797 cycles

* LH ELEVATOR PCU #3 LEAK (C-CHECK RO 9/8/2021) REMOVED AND REPLACED LH ELEVATOR #3 PCU WITH SERVICEABLE UNIT REF CRJ900 AMM 27-33-01-000-801-A01 AND 27-33-01-400-801-A01. LK AND OPS CKECK GOOD COMPLIED WITH TASK CARD 27-320-1003-SKY

Part: PCU — LEAKING (LT ELEVATOR) · airframe 31,717 hrs · 21,797 cycles

* LH ELEVATOR PCU #2 LEAK (C-CHECK RO 9/8/2021) REMOVED AND REPLACED LH ELEVATOR #2 PCU WITH SERVICEABLE UNIT REF CRJ900 AMM 27-33-01-000-801-A01 AND 27-33-01-400-801-A01. LK AND OPS CK GOOD COMPLIED WITH TASK CARD 27-320-1003-SKY

Part: SUPPORT BRACKET — BENT (DOOR FRAME) · airframe 31,717 hrs · 21,797 cycles

* LOWER AFT TRACK SUPPORT BRACKET OF AFT BAGGAGE BAY DOOR SURROUND IS BENT ( MARKED) (C-CHECK RO 9/8/2021) REMOVED AND REPLACED GUIDE ROLLER AFT SUPPORT BRACKET ON AFT BAGGAGE BAY DOOR SURROUND. REF:DWG#MM670-35060, REV W, AND SRM 51-42-06-001-001-A01.

Part: PCU — LEAKING (LT ELEVATOR) · airframe 31,717 hrs · 21,797 cycles

* LH ELEVATOR PCU #1 LEAK (C-CHECK RO 9/8/2021) REMOVED AND REPLACED LH ELEVATOR #1 PCU WITH SERVICEABLE UNIT REF CRJ900 AMM 27-33-01-000-801-A01 AND 27-33-01-400-801-A01. LK AND OPS CHECK GOOD COMPLIED WITH TASK CARD 27-320-1003-SKY

Part: SEAT TRACK — CORRODED (BS 849-976 RBL9) · airframe 31,717 hrs · 21,797 cycles

CABIN FLOOR SEAT TRACK SECTION FS 849.00 TO FS 976.00, RBL 9 HAS SEVERAL AREAS OF CORROSION. (C-CHECK RO 9/8/2021) REMOVED AND REPLACED NEW SEAT TRACK IN MID CABIN BETWEEN FS.84900 TO FS976.00 RBL 9 IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) TOOL ID: TUC7831 DUE DATE: 28FEB22 (SEE CONTINUATION SHEET FOR FURTHER DETAILS)

Part: FLOOR SUPPORT — CORRODED (BS 280-319) · airframe 31,717 hrs · 21,797 cycles

* R/H FLOOR SILL HAS MULTIPLE AREAS OF CORROSION FROM F/S 280 TO APPROX 319 ( MARKED ) (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED RH FLOOR SILL FROM APPROX FS280 TO FS319 WITH NEW UNIT. REF CRJ900 51-42-06-001-001-A01, 51-42-13-001-001-A01, 51-42-21-001-001-A01 AND DWG SH690-32170 REV AD. COMPLIED WITH TASK CARD 51-900-1002-SKY. PRESSURE CHECKED GOOD, SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: SEAT TRACK — CORRODED (BS 847-849 RBL9) · airframe 31,717 hrs · 21,797 cycles

CABIN FLOOR SEAT TRACK SECTION FS 847.00 TO FS 849.00, RBL 9 HAS SEVERAL AREAS OF CORROSION. (C-CHECK RO 9/8/2021) REMOVED AND REPLACED NEW SEAT TRACK IN MID CABIN BETWEEN FS847.00 TO FS849.00 RBL 9 IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) TOOL ID: TUC7831 DUE DATE: 28FEB22 (SEE CONITUATION SHEET FOR FURTHER DETAILS)

Part: SEAT TRACK — CORRODED (BS 847-849 LBL9) · airframe 31,717 hrs · 21,797 cycles

CABIN FLOOR SEAT TRACK SECTION FS 847.00 TO FS 849.00, LBL 9 HAS SEVERAL AREAS OF CORROSION. (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK FOR FS847- FS849 LBL9 REF CRJ-900 AMM 53-00-49-400-801-A07, USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE: 28-FEB-22 / ORDERED HARDWARE AS REQUIRED

Part: FITTING — CORRODED (DOOR HAND RAIL) · airframe 31,717 hrs · 21,797 cycles

*CORROSION ON PAX DOOR SURROUND HANDRAIL FITTING AT APPROX. FS 315.96. MARKED (C-CHECK RO 9/8/2021) REMOVED AND REPLACED FWD HANDRAIL FITTING AT APPROX. FS 315.96 REF. CRJ900 SRM 51-42-21-001-001-A01 AND DWG# SH670-31810 REV. AE / COMPLIED WITH SKYWESTTASK CARD 51-900-1002-SKY (CL600-2D24) STRUCTURAL MAJOR REPAIR (**RII**)

Part: PLATE — CORRODED (FWD CARGO) · airframe 31,717 hrs · 21,797 cycles

* FOWARD BAGGAGE BAY, AFT TIE DOWN RING PLATE AT LBL3.4 CORRODED (MARKED) (C-CHECK RO 9/8/2021) REPLACED AFT SIDE TIE DOWN RING PLATE FWD BAGG BAY LBL3.4. REF CRJ900 SRM 51-42-06-001-001, REF CRJ900 SRM 51-42-21-001-001-A01 AND DWG SH670-33600 REV-Y. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: SEAT TRACK — CORRODED (BS 764-847) · airframe 31,717 hrs · 21,797 cycles

* L/H SIDE SEAT RAIL FROM F/S 764 TO 847+16 APPROX HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED NEW FROM STOCK L/H SEAT RAIL PART # SH670-37543-5 FROM FS764.00-FS847+16.00 REF. CRJ900 AMM 53-00-49-400-801-A07.TUC8607 DUE DATE: 28-FEB-22.

Part: ANGLE — CORRODED (PAX DOOR AREA) · airframe 31,717 hrs · 21,797 cycles

*CORROSION ON PAX DOOR LOWER SILL KICKPLATE ANGLE. AREAS MARKED (C-CHECK RO 9/8/2021) CORROSION ON PAX DOOR LOWER SILL KICKPLATE ANGLE COVERS MOST OF THE PART IS OVER FASTENER HOLES AND MULTIPLE CROSS SECTIONS AND IS OUT LIMITS REF CRJ900 SRM 53-21-23-101-001-A02. / REMOVED AND INSTALLED REPLACEMENT FITTING WITH REPLACEMENT HARDWARE REF DRW. SH670-31810 REV AE., REF CRJ900 SRM 51-42-06-001-001-A01 AND REF CRJ900 SRM 51-42-21-001-001-A01 / . COMPLIED WITH 51-900-1002-SKY

Part: BRACKET — CORRODED (FWD CARGO) · airframe 31,717 hrs · 21,797 cycles

* FOWARD BAGGAGE BAY, MACHINED BRACKET (LBL 24) CORRODED FWD OF FOWARD DOOR (MARKED) (C-CHECK RO 9/8/2021) REMOVED AND REPLACED FWD BAGGAGE BAY MACHINED BRACKET (LBL24) FWD OF FWD DOOR IAW CRJ900 SRM 51-42-14-001-001-A01, CRJ900 SRM 51-42-21-001-001-A01 AND DWG SH670-33600 REV Y . COMPLIED WITH 51-900-1002-SKY.

Part: SEAT TRACK — CORRODED (BS 485-570) · airframe 31,717 hrs · 21,797 cycles

* L/H SIDE SEAT RAIL FROM F/S 485 TO 570 APPROX HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK ON L/H SIDE WALL BETWEEN FS485- FS570 REF CRJ-900 AMM 53-00-49-400-801-A01 / USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE: 28-FEB-22 / ORDERED HARDWARE AS REQUIRED FOR INSTALLATION

Part: INTERCOSTAL — CORRODED (BS 310-319 S21L) · airframe 31,717 hrs · 21,797 cycles

*CORROSION ON INTERCOSTAL ATTACHED TO STGR 21L BETWEEN FS 310.00 €“ 319.00 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED STR 21L INTERCOSTAL FROM FS310.00 TO FS333.00 REF. CRJ 900 SRM 51-42-06-001-001-A01 AND DWG SH670-31810 REV Y. COMPLIED WITH 51-900-1002-SKY

Part: SLAT TRACK — GROOVED (LT WING) · airframe 31,717 hrs · 21,797 cycles

*LH SLAT TRACK 3-3 HAS WEAR GROOVES ON LOWER SURFACE (C-CHECK RO 9/8/2021) BLENDED DAMAGE ON LH SLAT TRACK 3-3. REF. CRJ900 SRM 51-12-00-001-001-A01. COMPLIED WITH MHIRJ REO 690-57-42-813 REV. --, DATED 2021-07-22 STEPS 1-7. SEE CONTINUE CARD FOR FURTHER DETAILS. / COMPLIED WITH SKYWEST TASK CARD 27-900-1009-SKY AND TASK CARD 51-900-1002-SKY / OPS. TEST GOOD

Part: SEAT TRACK — CORRODED (BS 811-815) · airframe 31,717 hrs · 21,797 cycles

* L/H SIDE SEAT RAIL CHANNEL HAS CORROSION AT APPROX F/S 811 TO 815 ( MARKED ) (C-CHECK RO 9/8/2021) L/H SIDE SEAT RAIL CHANNEL FS 783.00 €“ FS 854.00 WAS REPLACED ON JOB 91517064 OP 100 CAMP 23050365

Part: FLOORBEAM — CRACKED (BS 280 LBL 12) · airframe 31,717 hrs · 21,797 cycles

* COCKPIT FLOOR BEAM, PILOTS SIDE, LBL 12.00, "CRACKED" IN RADIUS AT FWD SIDE OF F.S. 280.00 CROSS BEAM ATTACHMENT INTERSECTION LOCATION (MARKED). (C-CHECK RO 9/8/2021) REPAIR OF THE FLOOR BEAM SECTION IS A CRACK AND NO DAMAGE ALLOWED REF. CRJ-900 SRM, 53-11-43-201-003-A01. REPLACED COCKPIT FLOOR BEAM SECTION REF. CRJ-900 SRM 53-11-43-201-003-A01. REMOVED AND REPLACED FLOOR BEAM SECTION FROM LBL 12.00 FROM FS265.00 TO FS280.00 REF. CRJ-900 SRM, 53-11-43-201-003-A01. COMPLIED WITH TASK CARD 51-900-1002-SKY

Part: SEAT TRACK — CORRODED (BS 677-720) · airframe 31,717 hrs · 21,797 cycles

* L/H SIDE SEAT RAIL FROM F/S 677 TO 720 APPROX HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK P/N: SH690-36284-1 BETWEEN FS677- FS720 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE 28-FEB-22 / ORDERED NEW HARDWARE REQUIRED

Part: FLOORBEAM — CORRODED (BS 349) · airframe 31,717 hrs · 21,797 cycles

*CORROSION ON FLOOR BEAM FITTING ATTACHED TO FRAME FS 349.00 AT APPROX. STGR 18L. (C-CHECK RO 9/8/2021) REMOVED AND REPLACED FLOOR BEAM FITTING AT FS.349 APPROX. STGR18L WITH NEW REF. CRJ 900 SRM 51-42-21-001-001-A01 AND DWG #SH670-31810 REV.Y. COMPLIED WITH SKYWEST M-337 FORM AND SKYWEST MAJOR REPAIR TASK CARD 51-900-1002-SKY.

Part: SEAT TRACK — CORRODED (CABIN) · airframe 31,717 hrs · 21,797 cycles

* R/H SIDE SEAT RAIL BTWN OVERWING EMER EXITS HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) INSTALLED NEW R/H TRACK P/N: SH690-36285-1 BETWEEN FS743- FS763 REF CRJ-900 AMM 53-00-49-400-801-A07, USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE: 28-FEB-22

Part: ANGLE — CORRODED (BS 319-349) · airframe 31,717 hrs · 21,797 cycles

* GALLEY SERVICE DOOR SURROUND FS319 -FS349 LOWER MOUNTING ANGLE CORRODED (MARKED) (C-CHECK RO 9/8/2021) FOUOND GALLEY SERVICE DOOR SURROUND AT FS319-FS349 LOWER MOUNTING ANGLE TO BE OUT OF LIMITS REF CRJ-900 SRM, 53-21-23-101-002-A02. REMOVED AND REPLACED LOWER MOUNTING ANGLE REF. CRJ-900 SRM, 51-42-06-001-001-A01, CRJ-900 SRM, 51-42-21-001-001-A01, CRJ-900 SRM, 51-42-36-001-001-A01 AND DWG SH670-31950 REV Y. COMPLIED WITH SKY CARD 51-900-1002-SKY.

Part: SEAT TRACK — CORRODED (BS 349-477 LBL9) · airframe 31,717 hrs · 21,797 cycles

* LBL 9 FLOOR SEAT RAIL FROM APROX 349 TO APROX FS 477 CORRODED (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK P/N: SH670-32249-3 FOR LBL9 BETWEEN FS349- FS477 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TORQUE TOOL 8607 CAL DUE DATE: 28-FEB-22 / ORDERED HARDWARE AS REQUIRED FOR INSTALLATION

Part: FRAME — CORRODED (BS 333 S24-25R) · airframe 31,717 hrs · 21,797 cycles

FS 333 - FRAME CORRODED ON FWD AND AFT SIDE BTWN STGRS 24L/25R (C-CHECK RO 9/8/2021) REMOVED FRAME AT FS333 FROM STGR 21L TO STGR 25R AND INSTALLED NEW FRAME AT FS333 TO STGR 21L TO STGR 25R REF TO CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH670-32420 REV. E. COMPLIED WIT TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED.

Part: SEAT TRACK — CORRODED (BS 847-897) · airframe 31,717 hrs · 21,797 cycles

* L/H SIDE SEAT RAIL FROM F/S 847+16 TO 897 APPROX HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED NEW FROM STOCK PART # L/H SIDE SEAT RAIL FROM F/S 847+16 TO 897 APPROX, REF. CRJ900 AMM 53-00-49-400-801-A07, TUC8607 DUE DATE: 28-FEB-22.

Part: FLOORBEAM — CORRODED (BS 280) · airframe 31,717 hrs · 21,797 cycles

* CORROSION DETECTED ON AFT SIDE OF F.S. 280.00, BELOW FLOOR, ON A-BAY FLOOR BOARD SUPPORT "ANGLE" (MARKED). (C-CHECK RO 9/8/2021) REMOVED AND REPLACED FLOOR BOARD SUPPORT ANGLE AT FS280.00 REF. CRJ 900 SRM 51-42-06-001-001-A01 AND SRM 51-42-21-001-001-A01

Part: SEAT TRACK — CORRODED (BS 881-815) · airframe 31,717 hrs · 21,797 cycles

* R/H SIDE SEAT RAIL CHANNEL HAS CORROSION AT APPROX F/S 811 TO 815 ( MARKED ) (C-CHECK RO 9/8/2021) R/H SIDE SEAT RAIL CHANNEL FS 783.00 €“ FS 854.00 WAS REPLACED ON JOB 91517064 OP 97 CAMP 23050351

Part: BULKHEAD — CORRODED (BS 280 L-RBL 9) · airframe 31,717 hrs · 21,797 cycles

* CORROSION DETECTED ON BOTH (L/H AND R/H) F.S. 280.00 BULKHEAD, FLOOR LEVEL POSTS, LBL 9.00 AND RBL 9.00, ON THE ATTACHING "CLIPS" (MARKED). (C-CHECK RO 9/8/2021) FOUND LH AND RH CLIPS AT FS280 FLOOR LEVEL POSTS LBL9 AND RBL9 TO BE OUT OF LIMITS REF. CRJ-900 SRM, 53-00-00-101-001-A01. REMOVED AND REPLACED LH AND RH CLIPS AT FS280 FLOOR LEVEL POSTS LBL9 AND RBL9 REF. CRJ-900 SRM, 51-42-13-001-001-A01, / CRJ-900 SRM, 53-11-10-201-006-A01. CRJ-900 SRM, 51-42-06-001-001-A01 AND DWG CC670-34010 REV J. COMPLIED WITH TASK CARD 51-900-1002-SKY

Part: SEAT TRACK — CORRODED (BS 485-570) · airframe 31,717 hrs · 21,797 cycles

* R/H SIDE SEAT RAIL FROM F/S 485 TO 570 APPROX HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK P/N: SH690-36281-1 ON R/H SIDE ON FS485- FS570 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TORQUE TOOL TUC8615 CAL DUE DATE: 10/31/21 / ORDERED HARDWARE AS REQUIRED

Part: FLOOR SUPPORT — CORRODED (BS 985-1000) · airframe 31,717 hrs · 21,797 cycles

* L/H FLOOR SILL HAS CORROSION BTWN F/S 985 AND 1000 APPROX ( MARKED ) (C-CHECK RO 9/8/2021) REMOVED AND REPLACED LH FLOOR SILL BETWEEN FS985 AND FS1000. REF. CRJ900 SRM 51-42-06-001-001-A01 AND DWG# MM670-35085 REV. L / COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY (CL600-2D24) STRUCTURAL MAJOR REPAIR (**RII**)

Part: FRAME — CORRODED (BS 349 S25L-R) · airframe 31,717 hrs · 21,797 cycles

* FRAME 349 IN AV BAY CORRODED FROM APROX STRG 25L TO STRG 25R FWD AND AFT SIDES MARKED (C-CHECK RO 9/8/2021) EVALUATED DAMAGE AND FOUND TO BE OUT OF LIMITS. REMOVED AND REPLACED FS 349 FRAME WITH NEW. REF. CRJ 900 SRM 51-42-06-001-001-A01 AND DWG SH690-31350 REV. M / COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY, LEAK CHECKS GOOD / SEE CONTINUATION CARD FOR DETAILS OF WORK PERFORMED

Part: SLAT TRACK — GROOVED (LT WING) · airframe 31,717 hrs · 21,797 cycles

*LH SLAT TRACK 1-1 HAS WEAR GROOVES ON LOWER SURFACE (C-CHECK RO 9/8/2021) PERFORMED PERMANENT REPAIR ON *LH SLAT TRACK 1-1. REF. MHIRJ REO 690-57-42-812 REV. -- DATED: 2021-07-21 / SEE CONTINUATION CARD FOR DETAILS OF WORK PERFORMED. COMPLIED WITH TASK CARD 51-900-1002SKY

Part: INTERCOSTAL — CORRODED (BS 349-364 S27R) · airframe 31,717 hrs · 21,797 cycles

* INTERCOSTAL AT APROX STRG 27 R CORRODDED FROM FS 349. FS 364 MARKED (C-CHECK RO 9/8/2021) EVALUATED DAMAGE AND FOUND TO BE OUT OF LIMITS. REMOVED AND REPLACED INTERCOSTAL APPROX STRG 27 FROM FS349 TO FS364 WITH NEW. REF. CRJ 900 SRM 51-42-06-001-001-A01 AND DWG SH670-32050 REV J / COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY, LEAK CHECK GOOD / SEE CONTINUATION CARD FOR DETAILS OF WORK PERFORMED

Part: SEAT TRACK — CORRODED (BS 661-677) · airframe 31,717 hrs · 21,797 cycles

* L/H SIDE SEAT RAIL FROM F/S 661+16 TO 677 APPROX HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK P/N: SH690-36283-1 ON L/H SIDE FOR FS661+16- FS677 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE: 28-FEB-22 / ORDERED HARDWARE AS REQUIRED

Part: SEAT TRACK — CORRODED (BS 379-485) · airframe 31,717 hrs · 21,797 cycles

* R/H SIDE SEAT RAIL FROM F/S 379 TO 485 APPROX HAS MULTIPLE AREAS OF CORROSIONORDERED AND RECEIVED NEW SEAT TRACK P/N: SH670-32233-3 / INSTALLED NEW TRACK ON R/H SIDE ON FS379- FS485 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TORQUE TOOL TUC8615, CAL DUE DATE: 10/31/22 / ORDERED HARDWARE AS REQUIRED FOR INSTALLATION

Part: SEAT TRACK — CORRODED (CABIN) · airframe 31,717 hrs · 21,797 cycles

* L/H SIDE SEAT RAIL BTWN OVERWING EMER EXITS HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) INSTALLED NEW TRACK P/N: SH690-36285-1 FOR FS744015- FS761.85 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TOOL TUC8606 CAL DUE DATE: 31-OCT-21 / ORDERED HARDWARE AS REQUIRED FOR INSTALLATION

Part: INTERCOSTAL — CORRODED (BS 349-364 S20R) · airframe 31,717 hrs · 21,797 cycles

*CORROSION ON INTERCOSTAL ATTACHED TO STGR 20R BETWEEN FS 349.00 €“ 364.00 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED INTERCOSTAL AT STGR 20R, BETWEEN FS349 AND FS364. REF. CRJ900 SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01 AND DWG# SH670-31950 REV. Y SHEET 9 / COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY (CL600-2D24) STRUCTURAL MAJOR REPAIR (**RII**)

Part: SKIN — GOUGED (PAX DOOR) · airframe 31,717 hrs · 21,797 cycles

*GOUGE ON SKIN PAX DOOR FUSELAGE CUT OUT AT APPROX. FS 349.00, LOWER AFT CORNER, INNER SKIN. (C-CHECK RO 9/8/2021) REPAIRED SKIN ON PAX DOOR FUSELAGE CUT OUT AT FS349.00 LOWER AFT CORNER TO COMPLY WITH REO 690-53-21-1401 REV -- DATE 2021-07-20 STEPS.1-3 (SEE CONTINUATION SHEET FOR FURTHER DETAILS). COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: STOP FITTING — CORRODED (GALLEY DOOR) · airframe 31,717 hrs · 21,797 cycles

* GALLEY SERVICE DOOR SURROUND ALL FOUR FLOOR PROTECTOR PLATE WEBS CORRODED (MARKED) (C-CHECK RO 9/8/2021) REMOVED AND REPLACED ALL FOUR (2EA PN: SH670-32040-3 AND 2EA. PN: SH670-32040-4) GALLEY SERVICE DOOR SURROUND FLOOR PROTECTOR PLATE WEBS. REF CRJ900 SRM 51-42-06-001-001-A01, DWG SH670-31950 REV Y, AND REO 690-53-21-1416 REV-- 2021-08-17. COMPLIED WITH 51-900--1002-SKY.

Part: SEAT TRACK — CORRODED (BS 661-677) · airframe 31,717 hrs · 21,797 cycles

* R/H SIDE SEAT RAIL FROM F/S 661+16 TO 677 APPROX HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK P/N: SH690-36283-1 ON R/H SIDE WALL BETWEEN FS661+16- FS677 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TOOL TUC8607 CAL DUE DATE: 28-FEB-22 / ORDERED AND RECEIVED NEW HARDWARE FOR INSTALLATION

Part: INTERCOSTAL — CORRODED (BS 310-319 S20R) · airframe 31,717 hrs · 21,797 cycles

*CORROSION ON INTERCOSTAL ATTACHED TO STGR 20R BETWEEN FS 310.00 €“ 319.00 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED INTERCOSTAL AT STGR 20R BETWEEN FS310 AND FS319. REF. CRJ900 SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01 AND DWG# SH670-31950 REV. Y SHEET 9. / COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY (CL600-2D24) STRUCTURAL MAJOR REPAIR (**RII**)

Part: DOUBLER — CORRODED (FWD CARGO) · airframe 31,717 hrs · 21,797 cycles

* FOWARD BAGGAGE BAY, CENTER DOOR SURROUND, FWD JOINT PLATE ON RING DOUBLER CORRODED (MARKED) (C-CHECK RO 9/8/2021) REMOVED CORROSION AND EVALUATED REPAIR. REPAIR FOUND TO BE WITHIN LIMITS OF REO 690-53-31-593 REV. -- DATED: 2021-07-14 / SEE CONTINUATION CARD FOR DETAILS OF WORK PERFORMED. / C/W SKYWEST TASK CARD 51-900-1002-SKY

Part: FLOORBEAM — CORRODED (BS 280) · airframe 31,717 hrs · 21,797 cycles

* CORROSION DETECTED ON COCKPIT ENTRANCE FLOOR SUPPORT "ANGLE" ON FWD SIDE OF F.S. 280.00 CROSS BEAM (FLAGGED). (C-CHECK RO 9/8/2021) FOUND ENTRANCE FLOOR SUPPORT ANGLE AT FWD SIDE FS280 TO BE OUT OF LIMITS REF. CRJ-900 SRM, 53-00-00-101-001-A01. REMOVED AND REPLACED ANGLE FLOOR SUPPORT ON FWD SIDE OF FS280 CROSS BEAM REF. CRJ-900 SRM, 51-42-06-001-001-A01, CRJ-900 SRM, 51-42-21-001-001-A01. DWG CC670-33052 REV --G. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR FURTHER DETAILS.

Part: ANGLE — CORRODED (BS 319-349) · airframe 31,717 hrs · 21,797 cycles

* GALLEY SERVICE DOOR SURROUND FS319 -FS349 LOWER SILL ANGLE CORRODED (MARKED) (C-CHECK RO 9/8/2021) GALLEY SERVICE DOOR SURROUND FS319-FS349 LOWER SILL ANGLE CORROSION IS 100% THROUGH MATERIAL AND OUT OF LIMITS. REF CRJ900 SRM 53-21-23-101-002-A02. REMOVED AND REPLACED WITH NEW LOWER SILL ANGLE. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH670-31950 REV Y. COMPLIED WITH TASK CARD 51-900-1002-SKY, SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: STRINGER SPLICE — CORRODED (BS 333 S26L) · airframe 31,717 hrs · 21,797 cycles

FS 333 - 26L STRINGER SPLICE CORRODED ON BOTH SIDES OF FRAME (C-CHECK RO 9/8/2021) FOUND STRINGER SPLICE AT FS333 STGR 26L TO BE OUT OF LIMITS REF. CRJ-900 SRM, 53-00-00-101-001-A01. REMOVED AND REPLACED WTIH NEW STGR 26L SPLICE AT FS333 REF. CRJ-900 SRM, 51-42-06-001-001-A01 AND DWG SH670-32420 REV E. COMPLIED WITH TASK CARD 51-900-1002-SKY. NO LEAKS NOTED. SEE CONTINUE CARD FOR DETAILS.

Part: SEAT TRACK — CORRODED (BS 349-477 RBL9) · airframe 31,717 hrs · 21,797 cycles

* RBL 9 FLOOR SEAT RAIL FROM APROX 349 TO APROX FS 477 CORRODED (C-CHECK RO 9/8/2021) REMOVED AND REPLACED WITH NEW FROM STOCK PART # SH670-32159-1 RBL9 FLOOR SEAT RAIL FROM APROX. FS349.00-FS477.00 REF. CRJ900 AMM 53-00-49-400-801-A07, TUC8607 DUE DATE: 28-FEB-22.

Part: SEAT TRACK — CORRODED (BS 790) · airframe 31,717 hrs · 21,797 cycles

* L/H SIDE SEAT RAIL CHANNEL HAS CORROSION AT APPROX F/S 790 ( MARKED ) (C-CHECK RO 9/8/2021) RECEIVED REPLACEMENT CHANNEL P/N: SH690-37556-953 FOR L/H SIDE FS784- FS847 / INSTALLED TRACK CHANNEL REF CRJ-900 AMM 53-00-49-400-801-A07 / USED TORQUE TOOL TUC8606 CAL DUE DATE: 31-OCT-21

Part: SEAT TRACK — CORRODED (BS 847-865) · airframe 31,717 hrs · 21,797 cycles

* R/H SIDE SEAT RAIL FROM F/S 847+16 TO 865 HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED NEW FROM STOCK R/H SIDE SEAT RAIL PART # SH670-37543-5 FROM FS847+16.00 TO FS865.00 REF. CRJ900 AMM 53-00-49-400-801-A07.TUC8607 DUE DATE: 28-FEB-22.

Part: INTERCOSTAL — CORRODED (BS 349-364 S27L) · airframe 31,717 hrs · 21,797 cycles

* INTERCOSTAL AT APROX STRG 27 L CORRODDED FROM FS 349. FS 364 MARKED (C-CHECK RO 9/8/2021) DAMAGE ON LH LATCH-PIN INTERCOSTAL BETWEEN FS349.00 - FS364.00 WAS FOUND TO BE OUT OF LIMITS IN REF TO CRJ900 SRM 53-21-23-101-003 A01. REMOVED AND REPLACED LH LATCH-PIN INTERCOSTAL BETWEEN FS349.00 - FS364.00 WITH NEW. IN REF TO CRJ900 SRM 51-42-06-001-001-A01, CRJ900 SRM 51-42-21-001-001-A01 AND DWG SH670-32050 REV. J. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED.

Part: STRINGER SPLICE — CORRODED (BS 333 S25R) · airframe 31,717 hrs · 21,797 cycles

FS 333 - STRINGER 25R SPLICE CORRODED ON BOTH SIDES OF FRAME (C-CHECK RO 9/8/2021) DAMAGE ON FS333 - STRINGER 25R SPLICE FOUND TO BE OUT OF LIMITS IN REF TO CRJ900 SRM 53-00-00-101-A01. REMOVED AND REPLACED FS333 STRINGER 25R WITH NEW. IN REF TO CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH670-32420 REV. E. COMPLIED WITH TASK CARD 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED. NO LEAKS NOTED.

Part: SEAT TRACK — CORRODED (BS 790) · airframe 31,717 hrs · 21,797 cycles

* R/H SIDE SEAT RAIL CHANNEL HAS CORROSION AT APPROX F/S 790 ( MARKED ) (C-CHECK RO 9/8/2021) RECEIVED NEW SEAT TRACK CHANNEL P/N: SH690-37556-954 / INSTALLED NEW SEAT TRACK CHANNEL P/N: SH690-37556-954 BETWEEN FS783- FS847+16 (FS790) REF CRJ-900 AMM 53-00-49-400-801-A07 USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE: 28-FEB-22 / ORDERED NEW HARDWARE REQUIRED

Part: SEAT TRACK — CORRODED (BS 570-661) · airframe 31,717 hrs · 21,797 cycles

* R/H SIDE SEAT RAIL FROM F/S 570 TO 661+16 APPROX HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK P/N: SH690-36282-1 ON R/H SIDE WALL BETWEEN FS570- FS661+16 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE: 28-FEB-22 / ORDERED NEW HARDWARE AS REQUIRED FOR INSTALLATION

Part: BRACKET — CORRODED (FWD CARGO) · airframe 31,717 hrs · 21,797 cycles

* FOWARD BAGGAGE BAY, MACHINED BRACKET (LBL 24) CORRODED AFT OF FOWARD DOOR (MARKED) (C-CHECK RO 9/8/2021) BLENDED COROSION ON FWD BAGGAGE BAY MACHINED BRACKET AFT OF FWD DOOR (LBL24) REF. CRJ-900 SRM, 51-21-06-001-001-A01. FOUND TO BE OUT OF LIMITS REF. CRJ-900 SRM, 53-00-00-101-001-A01. REPLACED MACHINED BRACKET REF. CRJ-900 SRM, 51-42-21-001-001-A01 AND DWG SH690-33600 REV Y. COMPLIED WITH TASK CARD 51-900-1002-SKY. PRESSURE LEAK CHECK GOOD.

Part: SEAT TRACK — CORRODED (BS 897-969) · airframe 31,717 hrs · 21,797 cycles

* L/H SIDE SEAT RAIL FROM F/S 897 TO 969 APPROX HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) DISCREPANCY CORRECTION: FS907.00- FS969.00 (NOT FS897.00- FS969.00) / INSTALLED NEW SEAT TRACK P/N:SH690-37542-1 L/H SIDE WALL BETWEEN FS907- FS969 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TOOL TUC8607 CAL DUE DATE: 28-FEB-22 / ORDERED HARDWARE FOR INSTALLATION

Part: BRACKET — CORRODED (FWD CARGO) · airframe 31,717 hrs · 21,797 cycles

* FOWARD BAGGAGE BAY, MACHINED BRACKET (LBL 24) CORRODED FWD OF CENTER DOOR (MARKED) (C-CHECK RO 9/8/2021) REMOVED AND REPLACED BRACKET P/N: SH670-33390-1ON FWD BAGGAGE BAY, FWD OF CENTER DOOR. REF: DWG# SH670-33600 REV Y, SRM51-42-21-001-001-A01 AND SRM 51-42-22-001-001-A01. COMPLIED WITH 51-900-1002-SKY

Part: COAMING — WORN (LT NACELLE) · airframe 31,717 hrs · 21,797 cycles

*LH LOWER C-DUCT LATCH DOOR COAMING HAS WEAR AND BENDS ALONG THE EDGES (C-CHECK RO 9/8/2021) REMOVED AND REPLACED DAMAGED LH LOWER C-DUCT ( TRANSCOWL ) LATCH DOOR COAMING. REF: CRJ-900 SRM 51-42-06-001-001-A01, CRJ-900 SRM 51-42-13-001-001-A01, DWG. CN624-2003 REV AG AND BY COMPLYING WITH REO 670-54-21-1207 REV A DATED 2015-08-27, PG 2 FIG 6. COMPLIED WITH TASK CARD 51-900-1002-SKY, SEE CONTINUATION CARD FOR DETAILS

Part: SEAT TRACK — CORRODED (BS 693-847 RBL9) · airframe 31,717 hrs · 21,797 cycles

* R/H SEAT TRACK AT RBL 9 APPROX F/S 693 TO 847 HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED NEW SEAT TRACK IN MID CABIN BETWEEN FS693.00 TO FS847.00 RBL 9 IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) TOOL ID: TUC7831 DUE DATE: 28FEB22 (SEE CONTINUATION SHEET FOR FURTHER DETAILS)

Part: STRAP — CORRODED (BS 280-282) · airframe 31,717 hrs · 21,797 cycles

* CORROSION DETECTED ON CIRCUMFERENTIAL JOINT INTERFACE (STRAP) F.S. 280.00 TO F.S. 282.86, IN SEVERAL PLACES BETWEEN STGR 24L AND STGR 24R (MARKED). (C-CHECK RO 9/8/2021) BLENDED OUT ALL CORROSION ON CIRCUMFERENCIAL JOINT STRAP AT FS280 TO FS282.86, BETWEEN STGR 24L AND 24R. REF.REO 690-53-21-1403 REV.-- DATED 07/23/21, CRJ900 SRM 51-42-06-001-001-A01 AND DWG# SH670-30002 REV.A / COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY (CL600-2D24) STRUCTURAL MAJOR REPAIR (**RII**), LEAK CEHCKS GOOD

Part: FITTING — CORRODED (HAND RAIL) · airframe 31,717 hrs · 21,797 cycles

*PAX DOOR SURROUND HANDRAIL FITTING AT APPROX. FS 343.04 HAS CORRODED HARDWARE (C-CHECK RO 9/8/2021) REMOVED AND REPLACED AFT HANDRAIL FITTING AT APPROX. FS 343.04 REF. CRJ900 SRM 51-42-21-001-001-A01 AND DWG# SH670-31810 REV. AE / COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY (CL600-2D24) STRUCTURAL MAJOR REPAIR (**RII**)

Part: SEAT TRACK — CORRODED (BS 693-847 LBL9) · airframe 31,717 hrs · 21,797 cycles

* L/H SEAT TRACK AT LBL 9 APPROX F/S 693 TO 847 HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED NEW FROM STOCK L/H SEAT TRACK, P/N SH670-35864-3, AT LBL 9 APPROX FS693 TO FS847 REF. CRJ900 AMM 53-00-49-400-801-A07. / TORQUE WRENCH TUC8607, CAL DUE 28-FEB-22

Part: INTERCOSTAL — CORRODED (BS 333-349 S21L) · airframe 31,717 hrs · 21,797 cycles

*CORROSION ON INTERCOSTAL ATTACHED TO STGR 21L BETWEEN FS 333.00 €“ 349.00 (C-CHECK RO 9/8/2021) REMOVED AND REPLACED STR 21L INTERCOSTAL BETWEEN FS333.00 AND FS349.00 REF. CRJ 900 SRM 51-42-06-001-001-A01 AND DWG SH670-31810 REV-Y. COMPLIED WITH 51-900-1002-SKY

Part: PLATE — CORRODED (CARGO BAY) · airframe 31,717 hrs · 21,797 cycles

* FOWARD BAGGAGE BAY, FWD TIE DOWN RING PLATE AT LBL3.4 CORRODED (MARKED) (C-CHECK RO 9/8/2021) INSTALLED NEW FWD TIE DOWN RING PLATE FORWARD BAGGAGE BAY LBL3.4 PER CRJ900 SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01 AND DWG: SH670-33600 REV Y. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: SEAT TRACK — CORRODED (BS 865-969) · airframe 31,717 hrs · 21,797 cycles

* R/H SIDE SEAT RAIL FROM F/S 865 TO 969 HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK P/N: SH690-37542-1 BETWEEN FS865- FS969 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE 28-FEB-22 / ORDERED NEW HARDWARE REQUIRED

Part: DOOR SILL — CORRODED (GALLEY DOOR AREA) · airframe 31,717 hrs · 21,797 cycles

* GALLEY SERVICE DOOR FLOOR SILL FWD AND AFT DOOR STOP FITTINGS & ATTACHING HARDWARE CORRODED (MARKED) (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED GALLEY SERVICE DOOR FWD AND AFT FITTING HARDWARE WITH NEW HARDWARE. REF CRJ900 AMM 53-21-27-000-802-A02 AND 53-21-27-400-802-A02. AFTER CLEANING AND UPON FURTHER INSPECTION FWD AND AFT FITTINGS FOUND TO HAVE NO CORROSION PRESENT. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: SEAT TRACK — CORRODED (BS 661-693 RBL 9) · airframe 31,717 hrs · 21,797 cycles

* CABIN FLOOR SEAT TRACK SECTION FS 661.00 + 32 TO FS 693.00 , RBL 9 HAS SEVERAL AREAS OF CORROSION. (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK ON RBL9 BETWEEN FS661+32- FS693 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE: 28-FEB-22

Part: SEAT TRACK — CORRODED (BS 661-693) · airframe 31,717 hrs · 21,797 cycles

* CABIN FLOOR SEAT TRACK SECTION FS 661.00 + 32 TO FS 693.00 , LBL 9 HAS SEVERAL AREAS OF CORROSION. (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK P/N: SH690-33405-3 ON LBL9 BETWEEN FS661+32- FS693 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED TORQUE TOOL TUC8607 CAL DUE DATE: 28-FEB-22

Part: SEAT TRACK — CORRODED (BS 485-581 RBL 9) · airframe 31,717 hrs · 21,797 cycles

* CABIN FLOOR SEAT TRACK SECTION FS 485.00 TO FS 581.00, RBL 9 HAS SEVERAL AREAS OF CORROSION. (C-CHECK RO 9/8/2021) ORDERED AND RECEIVED NEW SEAT TRACK P/N: SH690-33407-1 / INSTALLED NEW TRACK AT FS485.00- FS581.00 ON RBL9 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TORQUE TOOL TUC5825 CAL DUE DATE: 30-JUN-22 / ORDERED HARDWARE AS REQUIRED FOR INSTALLATION

Part: FORMER — CORRODED (PAX DOOR) · airframe 31,717 hrs · 21,797 cycles

*PASSENGER DOOR €“ AFT FORMER IS CORRODED ON MULTIPLE AREAS AND ELEMENTS. (MARKED) (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED PAX DOOR AFT FORMER WITH NEW FROM STOCK UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG 601R31702 REV N. COMPLIED WITH TASK CARD 51-900-1002-SKY. PRESSURE CHECK GOOD, SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: FORMER — CORRODED (PAX DOOR) · airframe 31,717 hrs · 21,797 cycles

*PASSENGER DOOR - DD3 IS CORRODED FORWARD OF FORMER FS310.75. (MARKED) (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED DD3 WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG 601R31702 REV N. COMPLIED WITH TASK CARD 51-900-1002-SKY. PRESSURE CHECKED GOOD. SEE CONTINUE CARD FOR DETAILS FO WORK PERFORMED.

Part: SEAT TRACK — CORRODED (BS 581-661 RBL 9) · airframe 31,717 hrs · 21,797 cycles

* CABIN FLOOR SEAT TRACK SECTION FS 581.00 TO FS 661.00 + 32 , RBL 9 HAS SEVERAL AREAS OF CORROSION. (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK P/N: SH690-33404-1 ON RBL9 BETWEEN FS581- FS661+32 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TOOL TUC8607 CAL DUE DATE: 28-FEB-22 / ORDERED NEW HARDWARE AS REQUIRED FOR INSTALLATION

Part: FORMER — CORRODED (PAX DOOR) · airframe 31,717 hrs · 21,797 cycles

*PASSENGER DOOR €“ DD4 IS CORRODED FORWARD OF FORMER FS310.75. (MARKED) (C-CHECK RO 9/8/2021) REMOVED & REPLACED WITH NEW INTERCOSTAL PASSENGER DOOR €“ DD4 IS CORRODED FORWARD OF FORMER FS310.75 REF CRJ-900 SRM 51-42-06-001-001-A01 AND BOMBARDIER DWG #601R31702 REV -N.COMPLIED WITH 51-900-1002-SKY. OP'S TEST AND PRESSURE LEAK CHECK GOOD.

Part: SEAT TRACK — CORRODED (BS 485-581 LBL27) · airframe 31,717 hrs · 21,797 cycles

* CABIN FLOOR SEAT TRACK SECTION FS 485.00 TO FS 581.00, LBL 27 HAS SEVERAL AREAS OF CORROSION. (C-CHECK RO 9/8/2021) ORDERED AND RECEIVED NEW SEAT TRACK P/N: SH690-33407-1 / INSTALLED NEW TRACK AT FS485.00- FS581.00 ON LBL27 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TORQUE TOOL TUC5825 CAL DUE DATE: 30-JUN-22 / ORDERED HARDWARE AS REQUIRED FOR INSTALLATION

Part: SEAT TRACK — CORRODED (BS 581-661) · airframe 31,717 hrs · 21,797 cycles

* CABIN FLOOR SEAT TRACK SECTION FS 581.00 TO FS 661.00 + 32 , LBL 9 HAS SEVERAL AREAS OF CORROSION. (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK P/N: SH690-33404-1 FOR LBL9 BETWEEN FS581- FS661+32 REF CRJ-900 AMM 53-00-49-400-801-A07 / ORDERED HARDWARE AS REQUIRED FOR INSTALLATION / USED CALIBRATED TORQUE TOOL TUC8607 CAL DUE DATE: 28-FEB-22

Part: STOP FITTING — WORN (GALLEY DOOR AREA) · airframe 31,717 hrs · 21,797 cycles

* GALLEY SERVICE DOOR SURROUND ALL FIVE FOWARD DOOR STOP FITTINGS HAVE WEAR MARKS ON PAD (MARKED) (C-CHECK RO 9/8/2021) BLENDED 5EA FWD DOOR STOP FITTINGS ON GALLEY SERVICE DOOR SURROUND AREA REF. CRJ-900 SRM, 51-12-00-001-001-A01. FOUND TO BE OUT OF LIMITS REF. CRJ-900 SRM, 53-21-23-101-001-A01. COMPLIED WITH REO 690-53-21-1404 REV-- DATED: 2021-07-22, AND COMPLIED WITH TASK CARD 51-900-1002-SKY. BLEND REPAIR ONLY. NO WEIGHT GAIN OR LOSS

Part: STOP FITTING — WORN (GALLEY DOOR AREA) · airframe 31,717 hrs · 21,797 cycles

* GALLEY SERVICE DOOR SURROUND ALL FIVE AFT DOOR STOP FITTINGS HAVE WEAR MARKS ON PAD (MARKED) (C-CHECK RO 9/8/2021) BLENDED 5A AFT DOOR STOP FITTINGS ON GALLEY SERVICE DOOR SURROUND AREA REF. CRJ-900 SRM, 51-12-00-001-001-A01. FOUND TO BE OUT OF LIMITS REF. CRJ-900 SRM, 53-21-23-101-001-A01. COMPLIED WITH REO 690-53-21-1404 REV-- DATED: 2021-07-22, AND COMPLIED WITH TASK CARD 51-900-1002-SKY.BLEND REPAIR ONLY, NO WEIGHT GAIN OR LOSS

Part: DOOR FRAME — CORRODED (FUSELAGE) · airframe 31,717 hrs · 21,797 cycles

*PASSENGER DOOR €“ FORWARD FORMER IS CORRODED ON MULTIPLE AREAS AND ELEMENTS. (MARKED) (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED PAX DOOR FWD FORMER. REF CRJ900 SRM 51-42-21-001-001-A01, CRJ900 SRM 51-42-06-001-001-A01, DWG 601R31702 REV-N. COMPLIED WITH TASK CARD 51-900-1002-SKY. OPERATIONAL TEST CHECKED GOOD. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED, PRESSURE CHECKS GOOD

Part: SKIN — CHAFED (BS 911 S27) · airframe 31,717 hrs · 21,797 cycles

* EXTERNAL FUSELAGE SKIN CHAFED AT APPROX. FS 911.00 STGR 27. (C-CHECK RO 9/8/2021) FOUND CHAFE TO BE OUT OF LIMITS ON EXT FUSELAGE AT APPROX FS911 STGR 27 REF. CRJ-900 SRM, 53-00-01-101-001-A01 AND CRJ-900SRM, 53-51-01-001-003-A02. REMOVED GOUGE AT FS911 STGR 27 REF. CRJ-900 SRM, 51-12-00-001-001-A01. / PERFORMED PERMANENT REPAIR IAW MHIRJ REO 690-53-00-463 REV. -- DATED: 2021-07-27, REO 670-53-00-290 REV-F DATED 2019/04/26, CRJ900 SRM 51-42-21-001-001-A01, CRJ900 SRM 51-42-06-001-001-A01. COMPLIED WITH TASK CARD 51-900-1002-SKY. LEAK CHECK GOOD, SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: HINGE — GOUGED (PAX DOOR) · airframe 31,717 hrs · 21,797 cycles

*PASSENGER DOOR €“FUSELAGE SIDE OF HINGE LAND #27 IS GOUGED. (C-CHECK RO 9/8/2021) REMOVED AND REPLACED DAMAGED PAX DOOR HINGE (FUSELAGE SIDE) WITH NEW UNIT. REF CRJ900 SRM 53-21-23-201-007-A01 AND CRJ900 SRM 51-42-21-001-001-A01 AND DWG SH670-31810 REV AE. COMPLIED WITH TASK CARD 51-900-1002-SKY. PRESSURE CHECKED GOOD. SEE CONTINUE CARD FOR DETAILS OF WORK PERFORMED.

Part: SKIN — GOUGED (CARGO DOOR) · airframe 31,717 hrs · 21,797 cycles

*CENTER CARGO COMPARTMENT DOOR HAS GOUGE ON INNER SKIN AT FWD FRAME AND LOWER SPAR LOCATION (C-CHECK RO 9/8/2021) PERFORMED PERMANENT REPAIR ON CENTER CARGO COMPARTMENT DOOR INNER SKIN. REF. REO 690-52-35-276 REV.-- DATED: 2021-07-23 / COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY

Part: SKIN — GOUGED (FWD CARGO DOOR) · airframe 31,717 hrs · 21,797 cycles

*FWD BAGGAGE-BAY DOOR HAS GOUGE ON INNER SKIN AT FWD FRAME AND UPPER SPAR LOCATION (C-CHECK RO 9/8/2021) REPAIRED FWD BAGGAGE-BAY DOOR INNER SKIN AT FWD FRAME AND UPPER SPAR LOCATION REF CRJ-900 SRM, 51-12-00-001-001-A01, REF REO 690-52-35-277 REV-- DATED: 2021-07-23 STEPS 1-9, ALL STEPS COMPLIED WITH, WITHIN LIMITS. COMPLETED SKYCARD 51-900-1002-SKY.

Part: LUG — CRACKED (EMER EXIT DOOR) · airframe 31,717 hrs · 21,797 cycles

LH EMER EXIT AFT DOOR IS CRACKED AT UPPER LUG (MARKED) (C-CHECK RO 9/8/2021) REPAIRED THE DAMAGED LHS AFT OVERWING EMERGENCY EXIT DOOR PER REO 690-52-21-104 REV -- DATE 2021-07-09 / COMPLIED WITH 51-900-1002 SKY

Part: LUG — CRACKED (EMER EXIT DOOR) · airframe 31,717 hrs · 21,797 cycles

RH EMER EXIT AFT DOOR IS CRACKED AT UPPER LUG (MARKED) (C-CHECK RO 9/8/2021) REPAIRED THE DAMAGED RH OVERWING EMER EXIT AFT DOOR PER REO 690-52-21-105 REV -- 2021-07-19. / COMPLIED WITH 51-900-1002 SKY.

Part: SKIN — GOUGED (CARGO DOOR) · airframe 31,717 hrs · 21,797 cycles

*CENTER CARGO COMPARTMENT DOOR HAS GOUGE ON INNER SKIN AT AFT FRAME AND LOWER SPAR LOCATION (C-CHECK RO 9/8/2021) PERFORMED PERMANENT REPAIR ON CENTER CARGO COMPARTMENT DOOR. REF. REO 690-52-35-276 REV.-- DATED: 2021-07-23 / COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY

Part: FLOOR SUPPORT — CORRODED (CABIN) · airframe 31,717 hrs · 21,797 cycles

*PASSENGER DOOR €“ FLOOR SUPPORT ANGLE ON THE DOOR SILL HAS CORROSION ON MULTIPLE AREAS. (MARKED) (C-CHECK RO 9/8/2021) PASSENGER DOOR SILL FLOOR SUPPORT ANGLE REMOVED AND REPLACED WITH NEW, REF CRJ 900 SRM 51-41-02-001-001-A01. OPERATIONAL TEST CHECKED GOOD. SEE CONTINUATION CARD FOR DETAILS.COMPLIED WITH 51-900-1002-SKY.

Part: SKIN — GOUGED (FWD CARGO DOOR) · airframe 31,717 hrs · 21,797 cycles

*FWD BAGGAGE-BAY DOOR HAS GOUGE ON INNER SKIN AT AFT FRAME AND UPPER SPAR LOCATION (C-CHECK RO 9/8/2021) REPAIRED FWD BAGGAGE-BAY DOOR INNER SKIN AT AFT FRAME AND UPPER SPAR LOCATION REF CRJ-900 SRM, 51-12-00-001-001-A01, REF REO 690-52-35-277 REV-- DATED: 2021-07-23 STEPS 1-9, ALL STEPS COMPLIED WITH, WITHIN LIMITS. COMPLETED SKYCARD 51-900-1002-SKY.

Part: DOOR SILL — CORRODED (AT CARGO) · airframe 31,717 hrs · 21,797 cycles

AFT BAGGAGE-BAY DOOR CUTOUT SILL HAS EVIDENCE OF CORROSION, MULTIPLE LOCATIONS (C-CHECK RO 9/8/2021) REMOVED AND REPLACED AFT BAGGAGE BAY DOOR SILL REF. CRJ 900 SRM 51-42-06-001-001-A01, 51-42-21-001-001-A01, 51-42-13-001-001-A01, 51-45-00-001-001-A01 AND DWG MM670-35085 REV. L. TASK CARD 51-900-1002-SKY COMPLIED WITH.

Part: DRAG ANGLE — CRACKED (FUSE-STAB) · airframe 31,717 hrs · 21,797 cycles

*POSSIBLE CRACK ON VERTICAL/FUSELAGE AFT DRAG ANGLE (LH SIDE) (C-CHECK RO 9/8/2021) CRACK VERIFIED AND MARKED ON LH AFT DRAG ANGLE / FASTENERS REMOVED IAW CRJ900 SRM 51-42-06-001-001-A01, - AREA DAMAGE REMOVED OR CUT AWAY AT AFT DRAG ANGLE ON JOIN OF VERICAL WITH FUSELAGE IN L/H SIDE, IAW CRJ900 SRM 55-31-00-201-001-A01 / HFEC INSPECTED PER REF CRJ900 NDTM 51-20-006-250-A01. NO DEFECTS NOTED BEYOND EDGES OF CUT LINE, AND UNDERLYING STRUCTURE / INSTALLED -5 AND -7 REPAIR ANGLES REF. CRJ 900 SRM 55-31-00-201-001-A01 / RESTORED DECORATIVE FINISH TO WORKED AREA REF CRJ-900 SRM 51-21-16-001-001-A01 / SEE CONTINUATION CARD FOR WORK DETAILS / C/W SKYWEST TASK CARD 51-900-1002-SKY

Part: MOUNT — CORRODED (NR 1 GALLEY) · airframe 31,717 hrs · 21,797 cycles

OPON REMOVAL OF GALLEY1 MOUNTING FEET FOUND TO BE CORRODED. (C-CHECK RO 9/8/2021) REMOVED AND REPLACED GALLEY # 1 MOUNT FITTING P/N: SH670-32149-3 REF. CRJ-900 SRM 51-42-21-001-001-A01 AND BOMBARDIER DWG# SH690-32120 REV. AL. CW 51-900-1002-SKY

Part: SKIN — DENTED (BS 1002-1044) · airframe 31,717 hrs · 21,797 cycles

ADM# N170PQ-7270. EVALUATE AFT CARGO DOOR,AFT BOTTOM CORNER. FS 1044.74 TO FS 1002.26 4 20/32" FROM THE AFT EDGE TO CENTER OF DENT 6 12/32 " FROM THE BOTTOM AFT EDGE TO CENTER OF CIRCULAR DENT. IF DAMAGE IS REWORKED, OR WITHIN ACCEPTABLE LIMITS, ELIMINATE EVIDENCE USING STANDARD AIRCRAFT PRACTICES. (C-CHECK RO 9/8/2021) DRESSED BACK DISCREPANT DENT ON AFT CARGO DOOR FS1044.74-1002.26 ELIMINATING EVIDENCE REF. REO 690-52-31-071 REV. -- DATED 2021-07-21, ALL STEPS COMPLIED WITH. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: SKIN — DENTED (FUSELAGE) · airframe 31,717 hrs · 21,797 cycles

ADM# N170PQ-7271. EVALUATE AFT CARGO DOOR,AFT BOTTOM CORNER FS1044.74 TO FS 1002.26 3 24/32"FROM THE AFT EDGE TO THE CENTER OF DENT 5 1/4" FROM BOTTOM TO CENTER OF CIRCULAR DENT. IF DAMAGE IS REWORKED, OR WITHIN ACCEPTABLE LIMITS, ELIMINATE EVIDENCE USING STANDARD AIRCRAFT PRACTICES. (C-CHECK RO 9/8/2021) DRESSED BACK DISCREPANT DENT ON AFT CARGO DOOR FS1044.74-1002.26 ELIMINATING EVIDENCE REF. REO 690-52-31-071 REV. -- DATED 2021-07-21, ALL STEPS COMPLIED WITH. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: SKIN — DENTED (BS 1002-1044) · airframe 31,717 hrs · 21,797 cycles

ADM# N170PQ-7319. AFT CARGO DOOR FUSELAGE STATION FS 1044.74 TO 1002.26, UPPER RIGHT HAND SIDE OF THE AFT CARGO DOOR 7 1/2 INCHES FROM THE AFT EDGE OF THE CARGO DOOR. IF DAMAGE IS REWORKED, OR WITHIN ACCEPTABLE LIMITS, ELIMINATE EVIDENCE USING STANDARD AIRCRAFT PRACTICES. (C-CHECK RO 9/8/2021) DRESSED BACK DISCREPANT DENT ON AFT CARGO DOOR FS1044.74-1002.26 ELIMINATING EVIDENCE REF. REO 690-52-31-071 REV. -- DATED 2021-07-21, ALL STEPS COMPLIED WITH. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: SKIN — SCRATCHED (FUSELAGE) · airframe 31,717 hrs · 21,797 cycles

COMPLY WITH SCHEDULED MAINTENANCE CODE: RA68337-690-53-21-1352 170PQ MXCODEID55668-PR - SCRATCH ABOUT 4" AFT OF L1 DOOR ABOUT 2" IN LENGTH. COMPLIED WITH TEMPORARY REPAIR PER REO 690-53-21-1352. PERMANENT REPAIR DUE WITHIN 800 FLT HRS BY 32079.3 TAT, PART NUMBER: - , SERIAL NUMBER: 15170, POSITION: (C-CHECK RO 9/8/2021) PERFORMED PERMANENT REPAIR OF PREVIOUS BLEND OUT APPROX 4" AFT OF PASSENGER DOOR REF. REO 690-53-21-1411 REV. -- DATED 2021-07-30, ALL STEPS COMPLIED WITH. COMPLIED WITH TASK CARD 51-900-1002-SKY

Part: UNKNOWN — ODOR (CABIN) · airframe 29,973 hrs · 20,447 cycles

FLIGHT ATTENDANT REPORTS FUEL SMELL IN CABIN. AFT CABIN HAD STRONGEST ODOR, SMELL. SMELL STARTED WITHIN ABOUT 10 MINUTES AFTER TAKEOFF. FLIGHT 3857 - FILED OPEN PERFORMED INSPECTION OF THE APU AREA AND ENCLOSURE, OF BOTH ENGINE AREAS, UNDER THE CARGO PIT FLOOR BOARD, AND IN THE PACK AREA FOR ANY FUEL CONTAMINATION IN REF TO FIM. NO EVIDENCE OF FUEL CONTAMINATION INTO THE AIR SUPPLY SYSTEM. OPERATED THE PACKS OFF OF THE APU FOR 20 MINUTES AND OFF OF BOTH ENGINES FOR 20 MINUTES IN REF TO AMM. NO ABNORMAL SMELLS OR ODORS CAME FROM THE AIR CONDITIONING SYSTEM. PERFORMED FUEL LEAK CHECK AND VERIFIED NO FUEL SMELL AFTER SHUTDOWN OF THE ENGINES AND APU. THIS IS CURRENTLY A WORK IN PROGRESS

Part: UNKNOWN — ODOR (CABIN) · airframe 29,974 hrs · 20,448 cycles

FLIGHT ATTENDANT REPORTS FUEL SMELL IN CABIN. AFT CABIN HAD STRONGEST ODOR, SMELL. SMELL STARTED WITHIN ABOUT 10 MINUTES AFTER TAKEOFF. FLIGHT 3857 - FILED CLOSED PERFORMED INSPECTION OF THE APU AREA AND ENCLOSURE, OF BOTH ENGINE AREAS, UNDER THE CARGO PIT FLOOR BOARD, AND IN THE PACK AREA FOR ANY FUEL CONTAMINATION IN REF TO FIM. NO EVIDENCE OF FUEL CONTAMINATION INTO THE AIR SUPPLY SYSTEM. OPERATED THE PACKS OFF OF THE APU FOR 20 MINUTES AND OFF OF BOTH ENGINES FOR 20 MINUTES IN REF TO AMM. NO ABNORMAL SMELLS OR ODORS CAME FROM THE AIR CONDITIONING SYSTEM. PERFORMED FUEL LEAK CHECK AND VERIFIED NO FUEL SMELL AFTER SHUTDOWN OF THE ENGINES AND APU.

Part: UNKNOWN — ODOR (CABIN) · airframe 29,971 hrs · 20,445 cycles

FL370 HAD REPORTED FUEL SMELL IN THE MAN CABIN BY THE F/A€™S. THE SMELL MOVED FROM AFT MAIN CABIN AND FINALLY IN GALLEY. WE HAD NO MESSAGES OR ANY UNUSUAL FUEL BURN NOTICED. FLIGHT 3834 - FILED CLOSED THIS DISCREPANCY WAS TRANSFERRED TO CAMP ITEM 20890977 WITH THE FOLLOWING CORRECTIVE ACTION: "INSPECTED UNDER THE LAST 4 PASSENGER COMPARTMENT CENTER FLOOR PANELS. FOUND NO OBVIOUS EVIDENCE OF FUEL OR OVERWHELMING SMELL OF FUEL EMITTING FROM THE AREA UNDER THE FLOOR PANELS. INSPECTED RIGHT ENGINE FOR A FUEL LEAK, NO FUEL LEAKS NOTED. ALSO INSPECTED THE RECIRC FILTER INLET DUCTING, FOUND NO EVIDENCE OF FUEL OR ANY SMELL OF FUEL. INSPECTED THE APU AND FOUND THE APU DRAIN ASSY/TUBING DRAIN LINES MISSING, SEE CP 20891748 FOR CORECTIVE ACTION. RAN THE L/H AND R/H PACKS OFF OF THE APU BLEED ONLY FOR ABOUT 30 MINUTES, NO SMELL OF FUEL NOTED IN THE CABIN OF COCKPIT AT ANY POINT. ALSO RAN THE PACKS ON EACH ENGINE BLEED INDIVIDUALLY FOR ABOUT 30 MINUTES, NO SMELL OF FUEL NOTICED. THERE DOES NOT APPEAR TO BE AN UNUSUAL FUEL BURN NOTICED."

Part: MANIFOLD — FAILED (NLG STEERING) · airframe 29,591 hrs · 20,168 cycles

NOSE WHEEL STEERING CAUTION MESSAGE AFTER TAKEOFF. DID NOT RESET IN AIR OR UPON LANDING. FLIGHT 3940 - FILED CLOSEDTHIS DISCREPANCY WAS TRANSFERRED TO CAMP ITEM 20498166 WITH THE FOLLOWING CORRECTIVE ACTION: "REMOVED AND REPLACED NWS MANIFOLD IN REFERENCE TO CRJ900 AMM. OPS CHECK AND LEAK CHECK GOOD AT THIS TIME.

Part: CROSSBEAM — CRACKED (BS 280) · airframe 23,704 hrs · 16,263 cycles

CRACK FOUND ON THE LT BS 280 CROSSBEAM. REMOVED AND REPLACED THE CROSSBEAM IAW SRM.

Part: FLOORBEAM — CORRODED (BS 280) · airframe 23,704 hrs · 16,263 cycles

THE BS 280 COCKPIT FLOORBEAM ANGLE HAS CORROSION ALONG ITS UPPER SURFACE. INSTALLED A REPLACEMENT FLOORBEAM ANGLE IAW SRM.

Part: CROSSBEAM — CORRODED (BS 280) · airframe 23,704 hrs · 16,263 cycles

THE BS 280 CROSSBEAM HAS EVIDENCE OF CORROSION UNDER THE INBOARD SIDE OF ITS CAP. REMOVED AND REPLACED THE CROSSBEAM IAW SRM.

Part: RETAINER — DAMAGED (CARGO DOOR) · airframe 23,704 hrs · 16,263 cycles

CENTER CARGO BAY DOOR OUTER METAL PRESSURE SEAL RETAINER HAS SIX SEPARATE AREAS OF DAMAGE. REPLACED THE LOWER SEAL RETAINER IAW SRM. PRESSURE CHECKED GOOD, NO LEAKS NOTED.

Part: SKIN — DAMAGED (BS 333) · airframe 18,879 hrs · 13,168 cycles

TWO ELONGATED FASTENER HOLES THROUGH SKIN JUST AFT OF BS 333 AT STRINGER 26R. REPAIRED IAW EA.

Part: SEAT TRACK — NOT REPORTED (BS 573-661) · airframe 18,879 hrs · 13,168 cycles

LEFT SIDE SEAT FROM BS 573 - 661+14. R & R THE SEAT TRACK IAW AMM.

Part: SEAT TRACK — NOT REPORTED (BS 847) · airframe 18,879 hrs · 13,168 cycles

SEAT TRACK AT RT SIDE FROM BS 847+16 - 847+51. R & R THE SEAT TRACK IAW AMM.

Part: SEAT TRACK — CORRODED (BS 349-485) · airframe 18,879 hrs · 13,168 cycles

SEAT TRACK RBL 9 BS 349 - 485 CORRODED. R & R THE SEAT TRACK IAW REO AND AMM.

Part: SEAT TRACK — CORRODED (BS 672-722) · airframe 18,879 hrs · 13,168 cycles

LT SIDE SEAT TRACK FROM BS 672 - 722 CORRODED. R & R THE SEAT TRACK IAW REO AND SRM.

Part: SEAT TRACK — NOT REPORTED (BS 743-763) · airframe 18,879 hrs · 13,168 cycles

SEAT TRACK AT RT SIDE FROM BS 743 - 763. R & R THE SEAT TRACK IAW AMM.

Part: SEAT TRACK — NOT REPORTED (BS 836-847) · airframe 18,879 hrs · 13,168 cycles

SEAT TRACK FROM BS 836 - 847+51. REPLACED THE SEAT TRACK IAW SRM.

Part: SEAT TRACK — CORRODED (BS 691-836) · airframe 18,879 hrs · 13,168 cycles

SEAT TRACK AT LBL 9 FROM BS 691 - 836 CORRODED. R & R THE SEAT TRACK IAW AMM.

Part: SEAT TRACK — CORRODED (BS 836-847) · airframe 18,879 hrs · 13,168 cycles

LEFT FLOOR SEAT TRACK AT LBL 9 FROM BS 836 - 847.00 +51 CORRODED. R & R THE SEAT TRACK IAW REO AND SRM.

Part: SEAT TRACK — CORRODED (BS 691-836) · airframe 18,879 hrs · 13,168 cycles

SEAT TRACK LBL 9, BS 691 - 836 HAS CORROSION AT MULTIPLE LOCATIONS. R & R LT SEAT TRACK IAW REO AND SRM.

Part: STRINGER — NOT REPORTED (BS 280-333) · airframe 18,879 hrs · 13,168 cycles

STRINGER 25R BS 280 - 333. R & R THE STRINGER IAW SRM. PRESSURIZATION CHECKED SATISFACTORY.

Part: STRINGER — NOT REPORTED (BS 333-364) · airframe 18,879 hrs · 13,168 cycles

STRINGER AT 26R BETWEEN BS 333 - 364 REQUIRES REPLACEMENT. REMOVED AND INSTALLED NEW STRINGER IAW SRM. PRESSURIZATION LEAK CHECKED GOOD.

Part: STRINGER — CORRODED (BS 333-364) · airframe 18,879 hrs · 13,168 cycles

STRINGER 25R, BS 333 - 364 CORRODED. REMOVED AND INSTALLED NEW STRINGER IAW SRM.

Part: STRINGER — NOT REPORTED (BS 333-364) · airframe 18,879 hrs · 13,168 cycles

STRINGER AT STR 26L FROM FS 333 TO FS 364 REQUIRES REPLACEMENT. R & R STRINGER IAW SRM.

Part: DOOR SILL — CORRODED (BS 310-349) · airframe 18,879 hrs · 13,168 cycles

PASSENGER DOOR CUTOUTLOWER SILL FROM APPROXIMATELY BS 310 - 349 HAS CORROSION. R & R THE DOOR SILL IAW AMM AND SRM.

Part: SKIN — CHAFED (LT MLG DOOR) · airframe 14,882 hrs · 10,522 cycles

FOUND CHAFE DAMAGE TO THE LT MLG DOOR EDGE MEMBER AND INNER SKIN. C-CHECK, PERFORMED BLEND REPAIR TO CHAFE DAMAGE IAW REO.

Part: ACM — MALFUNCTIONED (AC BAY) · airframe 14,211 hrs · 10,075 cycles

ON TAXI OUT FLT DECK & CABIN BEGAN TO FILL WITH SMOKE, NO WARNINGS OR ALARMS, RETURNED TO GATE. FLT 4471 REPLACED LT PACK ACM. PN GG670-95009-5, SN ON 01221 & SN OFF 00608.

Part: LEVER — CHAFED (PAX DOOR) · airframe 14,017 hrs · 9,935 cycles

PASSENGER DOOR PULL IN LEVER HAS CHAFES ON BOTH SIDES. C-CHECK BLENDED CHAFES ON PASSENGER DOOR FWD PULL IN LEVER IAW REO.

Part: SKIN — CHAFED (FUSELAGE) · airframe 14,017 hrs · 9,935 cycles

CHAFE ON SKIN UNDER PANEL 195DL AT FS 913.00. C-CHECK BLENDED OUT CHAFE ON SKIN UNDER PANEL 195DL AT FS 913.00 IAW REO.

Part: GUIDE PLATE — CHAFED (CABIN DOOR) · airframe 14,017 hrs · 9,935 cycles

MAIN CABIN DOOR FWD & AFT GUIDE PLATE GOUGED CHAFED. C-CHECK BLENDED CHAFES ON MAIN CABIN DOOR FWD & AFT QUIDE PLATES IAW REO.

Part: LIFE VEST — UNSERVICEABLE (COCKPIT) · airframe 12,186 hrs · 8,750 cycles

OBSERVER'S LIFE VEST BAG TORN. REMOVED AND REPLACED OBSERVERS LIFE VEST IAW AMM 25-61-03.

Part: DOOR — OBSTRUCTED (CABIN) · airframe 11,903 hrs · 8,563 cycles

MAIN CABIN DOOR WON'T OPEN. REMOVED SNOW/ICE FROM PASSENGER DOOR AND PERFORMED SUCCESSFUL OPERATIONS CHECK IAW CRJ900 AMM 52-11-00. OK FOR CONTINUED SERVICE.

Part: WEB — CORRODED (FUSELAGE) · airframe 11,759 hrs · 8,459 cycles

RIGHT FS 280 LOWER WEB CORRODED BEYOND ALLOWABLE LIMITS. REPAIRED IAW BOMBARDIER REO 670-53-11-594.

Part: WEB — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,759 hrs · 8,459 cycles

LEFT FS 280 LOWER WEB CORRODED BEYOND ALLOWABLE LIMITS. REPAIRED IAW BOMBARDIER REO 670-53-11-594.

Part: BEAM — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,759 hrs · 8,459 cycles

RIGHT FS 280 BEAM CORRODED BEYOND ALLOWABLE LIMITS. REPLACED IAW SRM 51-42-06.

Part: BATTERY PACK — DISCHARGED (CABIN) · airframe 11,758 hrs · 8,459 cycles

DURING HEAVY CHECK FOUND MULTIPLE CEILING EMERGENCY LIGHTS INOP (AIRCRAFT IN HEAVY CHECK FROM 1/11/2013 UNTIL 1/30/2013). REMOVED AND INSTALLED EPSU BATTERY PACK 2 IAW CRJ 900 AMM 33-51-17, OPERATIONAL TEST OF EMERGENCY POWER SUPPLY UNIT GOOD IAW CRJ 900 AMM 33-51-17-710-801.

Part: LIGHT — INOPERATIVE (EXTERIOR) · airframe 11,758 hrs · 8,459 cycles

DURING HEAVY CHECK FOUND EXTERIOR EMERGENCY LIGHT AT RIGHT AFT OVERWING EXIT DOOR INOP. (AIRCRAFT IN HEAVY CHECK FROM 1/11/2013 UNTIL 1/30/2013). TROUBLESHOOT AND REPAIRED RIGHT AFT OVERWING EMERGENCY EXIT LIGHT IAW ESPM 20-16-00 AND AMM 3-51-15. PERFORMED OP CHECK IAW AMM 33-51-15, CHECK GOOD.

Part: LIFE VEST — UNSERVICEABLE (COCKPIT) · airframe 11,584 hrs · 8,343 cycles

FORWARD OBSERVERS LIFE VEST HAS A HOLE IN BAG. REMOVED AND REPLACED FORWARD OBSERVERS LIFE VEST IAW AMM 25-61-03.

Part: CONTROL VALVE — MALFUNCTIONED (AC BAY) · airframe 11,282 hrs · 8,120 cycles

SMOKE IN FORWARD CABIN IN FLIGHT. RIGHT PACK OVERHEAT ON GROUND 99 + NO OVERWEIGHT LANDING. REMOVED AND REPLACED RIGHT TEMPERATURE CONTROL VALVE IAW CRJ 900 AMM 21-51-20. OPS CHECK FAIL. INFO NOTE: REFER TO LOG PAGE 2273914 ITEM 1 FOR DEFERRAL OF RIGHT PACK. A/C OK FOR SERVICE.

Part: A/C PACK — OVERHEATED (AC BAY) · airframe 11,282 hrs · 8,120 cycles

RIGHT PACK AUTO FAIL AND OVERHEATING CAUSING SMOKE IN THE COCKPIT AND CABIN. FLIGHT 3644.

Part: LINKAGE — LACK OF LUBE (CABIN DOOR) · airframe 11,024 hrs · 7,916 cycles

MAIN CABIN DOOR VERY HARD TO OPEN, FELT LIKE IT BOUND UP. LUBRICATED MAIN CABIN DOOR LINKAGES IAW CRJ900 AMM.

Part: HANDLE — LACK OF LUBE (PAX DOOR) · airframe 9,878 hrs · 7,044 cycles

MAIN CABIN DOOR HANDLE STICKS HALFWAY UP WHEN OPENING. THE HANDLE HAS TO BE CLOSED IN ORDER TO GET THE HANDLE TO RELEASE. LUBED AND OPS CHECKED PAX DOOR WITH NO DEFECTS NOTED AT THIS TIME PER AMM 52-11-00.

Part: DOOR — OUT OF ADJUST (CABIN) · airframe 9,801 hrs · 6,989 cycles

F/A REPORTS MAIN CABIN DOOR HARD TO OPEN AND CLOSE. ADJUSTED AND OPS CHECKED DOOR IAW CRJ900 AMM 52-11-00. OPS CHECK GOOD, OK FOR SVC.

Part: SMOKE WARNING — FALSE ACTIVATION (LAVATORY) · airframe 9,792 hrs · 6,983 cycles

AFT LAV SMOKE MASTER WARNING. NO SMOKE OR FIRE THEN IT WENT OUT AFTER 15 MIN. PERFORMED ADJ/TEST OF AFT LAVE SMOKE DETECTION SYS IAW AMM 26-16-00. OPS CHECKS GOOD. NO DEFECTS FOUND. COMPLETED SMOKE/FUMES WORKSCOPE.

Part: STRINGER — CORRODED (FUSELAGE) · corrosion level 2 · airframe 9,162 hrs · 6,595 cycles

STRINGER 26R FOUND CORRODED BETWEEN FS 295 AND FS 310. REPAIRED IAW SRM 51-42-06.

Part: SKIN — CHAFED (FUSELAGE) · airframe 9,162 hrs · 6,595 cycles

FUSELAGE SKIN CHAFED AT FS 954 LWR CENTER FUSELAGE UNDER AFT FAIRING. REPAIRED IAW BOMBARDIER REO 670-53-00-014.

Part: DIAPHRAGM — CORRODED (FUSELAGE) · corrosion level 2 · airframe 9,162 hrs · 6,595 cycles

LEFT CENTER DIAPHRAGM BETWEEN FS 364 AND 349 WAS FOUND CORRODED. REPAIRED IAW SRM 51-42-06.

Part: DIAPHRAGM — CORRODED (FUSELAGE) · corrosion level 2 · airframe 9,162 hrs · 6,595 cycles

RIGHT FORWARD CENTER DIAPHRAGM FS 349 TO FS 364 CORRODED. REPAIRED IAW SRM 51-42-06.

Part: STRINGER — CORRODED (FUSELAGE) · corrosion level 2 · airframe 9,162 hrs · 6,595 cycles

STRINGER S-24R BETWEEN FS 333 AND FS 349 CORRODED. REPAIRED IAW BOMBARDIER REO 690-53-21-302.

Part: STRINGER SPLICE — CORRODED (FUSELAGE) · corrosion level 2 · airframe 9,162 hrs · 6,595 cycles

STRINGER SPLICE AT FS 333 S-26R CORRODED. REPAIRED IAW SRM 51-42-06.

Part: DOUBLER — CORRODED (FUSELAGE) · corrosion level 2 · airframe 9,162 hrs · 6,595 cycles

ANTENNA DOUBLER BETWEEN FS 295 AND FS 310 IN LINE WITH S-27 FOUND CORRODED. REPAIRED IAW SRM 51-42-06.

Part: STRINGER SPLICE — CORRODED (FUSELAGE) · corrosion level 2 · airframe 9,162 hrs · 6,595 cycles

STRINGER SPLICE S-24R FOUND CORRODED AT FS 333. REPAIRED IAW SRM 51-42-06.

Part: STRINGER — CORRODED (FUSELAGE) · corrosion level 2 · airframe 9,162 hrs · 6,595 cycles

STRINGER 24R LOWER FLANGE CORRODED BETWEEN FS 333 AND FS 349 . THE CORRODED SURFACE WAS BLENDED PER CRJ900 SRM 51. THE REMAINING MATERIAL THICKNESS AFTER BLEND OUT IS 0.058". REPAIRED IAW BOMBARDIER REO 690-53-21-302.

Part: STRUCTURE — DAMAGED (FUSELAGE) · airframe 9,162 hrs · 6,595 cycles

LIGHTNING DAMAGE FOUND. BLENDED THE CHAFED AREAS PER BOMBARDIER CRJ-900 SRM 53-00-00; 0. THE DAMAGE DIMENSIONS AFTER BLEND OUT ARE AS FOLLOWS: DEPTH=0.016" LENGTH=0.25", WIDTH=0.19". REPAIRED IAW BOMBARDIER REO 690-53-11-344.

Part: SKIN — DAMAGED (FUSELAGE) · airframe 9,162 hrs · 6,595 cycles

LIGHTNING DAMAGE TO THE FUSELAGE SKIN AT FS 295 BETWEEN S-25L AND S-26L. THE DAMAGE WAS REMOVED BY BLENDING RESULTING IN A 0.8 X 0.6 X 0.023 DEEP BLEND. REPAIRED IAW EA CRJ953-00242A AND ASSOCIATED 8110-3.

Part: LEVER — STICKS (THRUST REVERSER) · airframe 9,032 hrs · 6,464 cycles

RIGHT THRUST REVERSER DEPLOYS BUT WILL NOT INCREASE ABOVE IDLE REVERSE DURING LANDING. STOWS DEPLOYS NORMALLY. STICKY REVERSE LEVER. PERFORMED ENGINE RUN IAW CRJ 900 AMM 71-00-00. OPS CHECK RT THRUST REVERSER IAW CRJ 900 AMM 78-30-00. CHECKS GOOD. OK FOR SERVICE.

Part: STEERING SYS — MALFUNCTIONED (NLG) · airframe 8,370 hrs · 6,013 cycles

CREW DECLARED EMERGENCY PERFORMED AIR RETURN FOR NOSE WHEEL STEERING MESSAGE AFTER GEAR RETRACTION FLIGHT LANDED SAFELY WITHOUT FURTHER INCIDENT. INTERROGATED MDC AND FOUND A ONE TIME MESSAGE FOR NWS ARM SWITCH DISARMED IN FLIGHT. T/S PER CRJ900 FIM 32-50-00. OPS CHECKED GOOD AND TAXI CHECK GOOD.

Part: SWITCH — DEFECTIVE (NLG STEERING) · airframe 7,698 hrs · 5,600 cycles

CREW REPORTED NOSE WHEEL STEERING MESSAGE IN FLIGHT ON APPROACH INTO ATL, DECLARED EMERGENCY. A/C LANDED WITHOUT INCIDENT, VERFIED DISCREPANCY. REMOVED AND REPLACED STEERING ARMING SWITCH PER AMM 32-51-37. OPS CHECK FIM 32-51-37 GOOD, OK FOR SVC.

Part: WARNING SYSTEM — MALFUNCTIONED (COCKPIT) · airframe 6,372 hrs · 4,701 cycles

OUTBOARD FLT SPLRS AND OUTBOARD SPOILERONS MSG, PER MOC CYCLED CBS IAW RIL 2084 MSG CLRD, OK FOR SERVICE (CLEARED BY PILOT).

Part: WARNING SYSTEM — FALSE ACTIVATION (COCKPIT) · airframe 6,171 hrs · 4,604 cycles

STEERING INOP CAUTION MESSAGE IN FLIGHT. RESET & OPS CHECK OF NOSE STEERING IAW CRJ900 AMM 32-51-00 OPS CHECK GOOD ON GROUND AT THIS TIME, C/W EXTENSIVE TAXI CHECK WITH NO DEFECTS NOTED. UNABLE TO INDUCE ANY FAULTS AMM 71-00-00.

Part: WARNING LIGHT — ILLUMINATED (NLG STEERING) · airframe 2,450 hrs · 1,674 cycles

STEERING INOP CAUTION ON TAKEOFF OUT TLH. PERFORMED QRH PROCEDURES CONTACTED ATC, MOC DISPATCH TO HAVE TOW WAITING IN ATL AFTER LANDING. BRIEFED FA'S AND THEN THE PAXS. DECLARED AN EMERGENCY FOR THIS EVENT AND HAD CFR STANDING BY FOR LANDING. CAPTAIN PERFORMED LANDING, ON 27R AS PER QRH LONGEST RUNWAY WITHOUT INCIDENT AND STOPPED ON RUNWAY TO BE TOWED TO THE GATE.