N161PQ

Part: UNKNOWN — LEAKING (UNKNOWN) · airframe 36,320 hrs · 25,924 cycles

FO SIDE WINDSHIELD FAILED LEAK CHECK AFTER INSTALLATION (FILED CLOSED)REMOVED AND REPLACED RT WINDSHIELD IAW AMM 56-11-01. OPS CHECK AND LEAK CHECK GOOD. COMPLIED WITH TASK CARD 56-220-1000-SKY.

Part: UNKNOWN — SMOKE (UNKNOWN) · airframe 36,320 hrs · 25,924 cycles

FO SIDE WINDSHIELD HEAD WOOD BLOCK HAD SMOKE COMING FROM IT AND IS BURNT ON THE SIDE. (FLIGHT 4604 FILED OPEN)

Part: UNKNOWN — SMOKE (UNKNOWN) · airframe 36,320 hrs · 25,924 cycles

FO SIDE WINDSHIELD HEAD WOOD BLOCK HAD SMOKE COMING FROM IT AND IS BURNT ON THE SIDE. (FLIGHT 4604 FILED CLOSED)

Part: UNKNOWN — ODOR (UNKNOWN) · airframe 35,593 hrs · 25,102 cycles

OVERHEATING PLASTIC ODOR DURING FLIGHT LEFT SIDE OF FLIGHT DECK. (FLT 3801 FILED CLOSED) TROUBLESHOT FDE PER FIM 21-21-00. COMPLIED WITH OPERATIONAL TEST OF THE AIR-CONDITIONING DISTRIBUTION SYSTEM PER AMM 21-51-00 PROCEDURE 4. COULD NOT DUPLICATE THE ODOR. VERIFIED WITH PILOT AND CO-PILOT. REMOVED DISPLAY COOLING FAN PANEL. VISUALLY CHECK FOR AND DEBRIS OF BURN OBJECT. NONE NOTED. RE-INSTALLED PANEL. REF AMM 21-24-12. REMOVED CA SIDE CONSOLE. PERFORMED GVI FOR ODOR AND BURNT OBJECTS. NONE NOTED. RE-INSTALLED CA SIDE CONSOLE. REF AMM 25-15-03. COULD NOT DUPLICATE THE ODOR AT THIS TIME.

Part: UNKNOWN — FUMES (UNKNOWN) · airframe 35,410 hrs · 24,928 cycles

DURING TAKEOFF AND THROUGHOUT CLIMB TO CRUISE ALTITUDE, AIRCRAFT EMITTED A PUNGENT FUMY ODOR RESEMBLING OIL AND/OR EXHAUST INTO THE FLIGHT DECK. ODOR DISSIPATED IN CRUISE BUT RETURNED DURING FINAL APPROACH FROM 3,000 FT TO LANDING. APU WAS OFF IN BOTH OCCURRENCES. FORWARD FLIGHT ATTENDANT CHARCTERIZED THE SMELL AS RESEMBLING WET PAINT. NO EICAS INDICATIONS PRESENT. (FLT 3948 FILED CLOSED)TROUBLESHOT DURING TAKEOFF AND THROUGHOUT CLIMB TO CRUISE ALTITUDE, AIRCRAFT EMITTED A PUNGENT FUMY ODOR RESEMBLING OIL AND/OR EXHAUST INTO THE FLIGHT DECK. ODOR DISSIPATED IN CRUISE BUT RETURNED DURING FINAL APPROACH FROM 3,000 FT. TO LANDING. APU WAS OFF IN BOTH OCCURRENCES. FORWARD FLIGHT ATTENDANT CHARACTERIZED THE SMELL AS RESEMBLING WET PAINT. IN REFERENCE TO APPLICABLE STEPS IN CRJ 900 FDE SMOKE AND / ABNORMAL SMELL IN THE COCKPIT AIR CONDITIONING TASK FIM 21-21-00-810-806 AND SMOKE AND / OR ABNORMAL SMELL IN PASSENGER CABIN TASK FIM 21-22-00-810-806. REFR TO AML 1123523 FOR L PAC DEFERRAL.

Part: A/C PACK — SMOKE (LEFT) · airframe 35,091 hrs · 24,627 cycles

TROUBLESHOOT PACK 1 AUTO FAIL. STATES COCK PIT SMELLS LIKE OIL BADLY AND SMOKEY MIST IN THE AIR FOR ABOUT 20 SECONDS THROUGHOUT THE COCKPIT AND CABIN. (FILED CLOSED)TROUBLESHOT PACK 1 AUTO FAIL, PILOT STATED COCKPIT SMELLS LIKE OIL AND SMOKEY MIST IN THE AIR. PER FIM 21-22-00-810-806 RAN APU AND ENGINES TO DETERMINE WHERE THE SMELL WAS COMING FROM, APU ACTIVATED SMELL AND ENGINES WITH APU SHUT DOWN ACTIVATED SMELL, NO SMOKE NOTED. PACK 1 RUNNING BY ITSELF ACTIVATED SMELL SO REMOVED AND REPLACED LEFT HAND ACM IN REFERENCE TO AMM 21-51-08. OPS CHECK AND LEAK CHECK GOOD BUT SMELL STILL COMING FROM LEFT AIR CONDITIONING SYSTEM. REMOVED LCV TO DETERMINE CONTAMINATION OF APU WITH NO DEFECTS NOTED. REINSTALLED LCV IN REFERENCE TO AMM 49-51-05. INSPECTED RECIRCULATION FILTERS WITH NO DEFECTS NOTED IN REFERENCE TO AMM 21-22-12 AS WELL AS RECIRCULATION FANS IN REFERENCE TO AMM 21-22-10 AND MIXTURE MANIFOLD IN REFERENCE TO AMM 21-22-06 WITH NO DEFECTS NOTED AND NO ODOR PRESENT. INSPECTED LEFT RAM AIR SYSTEM IN REFERENCE TO 21-52-00 WITH NO DEFECTS NOTED. INSPECTED LEFT HEAT EXCHANGER IN REFERENCE TO AMM 21-51-06 WITH NO DEFECTS NOTED. INSPECTED LEFT CONDENSER/REHEATER IN REFERENCE

Part: PULLEY — DAMAGED (PAX DOOR CABLE) · airframe 35,019 hrs · 24,567 cycles

PAX DOOR ASSIST MOTOR CABLE PULLEY ATTATCHMENT POINT HAS SHEET METAL DAMAGE AND IS PULLED AWAY FROM DOOR STRUCTURE (FILED CLOSED) REPAIRED PAX DOOR CABLE PULLY ATTACHMENT POINT IN REFERENCE WITH REO 690-52-11-804 AND COMPLIED WITH M337. OPS CHECKS OF PAX DOOR ASSIST MOTOR GOOD AT THIS TIME.

Part: SPAR — CRACKED (WING) · airframe 31,056 hrs · 21,309 cycles

COMPLY WITH BOMBARDIER SERVICE BULLETIN 670BA-57-016 REV D DATED 09/12/2014 FOR THE LH AND RH REAR SPAR LINK ASSY REPLACEMENTS (BOTH ARE CRACKED AT CLEVIS BEARINGS) (C-CHECK) RO 2/1/2021 COMPLIED WITH BOMBARDIER SERVICE BULLETIN 670BA-57-016 REV D DATED 09/12/2014 PARTS B AND C FOR THE LH AND RH REAR SPAR LINK ASSY REPLACEMENTS. SERVICE BULLETIN 670BA-57-016, REVISION D, WINGS - CENTER WING PRIMARY STRUCTURE - DETAILED INSPECTION AND REPLACEMENT OF THE LEFT AND RIGHT REAR-SPAR LINK-ASSEMBLIES, PART B AND PART C, INCORPORATED.

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

MAIN AVIONICS BAY STR 27 CORRODED BETWEEN FS310.00 AND FS319.70 (C-CHECK) RO 2/1/2021 INSTALLED NEW STRINGER 27 IN MAIN AVIONICS BAY BETWEEN FS306.00 AND FS319.70 REF DWG SH670-31630 REV. K, CRJ 900 SRM 51-42-06-001-001-A01 AND SRM 51-42-21-001-001-A01. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: STRINGER SPLICE — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

MAIN AVIONICS BAY STR 23R SPLICE AT FS333.00 CORRODED (C-CHECK) RO 2/1/2021 MAIN AVIONICS BAY STR 23R SPLICE AT FS333.00 AS FOUND TO BE EXFOLIATED WITH 100% MATERIAL LOSS. REF: CRJ 900 SRM 53-00-00-101-001-A01. CORRODED SPLICE WAS REMOVED AND NEW SPLICE WAS INSTALLED AT FS333.00, STR23R. REF: CRJ 900 SRM 51-42-06-001-001-A01 & BOMBARDIER DWG SH670-32420, REV: E / PRESSURIZATION LEAK CHECK COMPLIED WITH, LEAK CHECK PASS. REF: CRJ 900 AMM 21-31-00-910-801-A02 / WEIGHT STATEMENT: PART REPLACED WITH SAME P/N. WEIGHT CHANGE NEGLIGIBLE / COMPLIED WITH TASK CARD 51-900-1002-SKY

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

STRINGER 23R AT FS319.70-FS333.00 HAS CORROSION. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED STGR 23R FROM FS280 TO FS333. REF.REO 690-53-21-1301 REV.-- DATED 01/11/2021 AND DWG# SH670-31630 REV. K SHEET 1, AND CRJ 900 SRM 51-42-06-001-001-A01 .SEE CONTINUATION CARD FOR DETAILS. CHECKS GOOD.COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY

Part: SHEAR TIE — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

CORROSION FOUND ON CLEAT AFT OF FRAME AT FS310.00, STGR 20R. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED STR 20R CLEAT AT FS310.00 REF. DRWG SH670-31950 REV. Y AND CRJ 900 SRM 51-42-06-001-001-A01. COMPLIED WITH TASK CARD 51-900-1002-SKY

Part: CLEAT — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

CLEAT LOCATED ON STGR22R AT FS 319.7 IS CORRODED (C-CHECK) RO 2/1/2021 .REMOVED AND REPLACED CLEAT AT FS319.7, STGR 22R REF. CRJ900 SRM 51-42-06-001-001-A01 AND DWG# SH670-31950 SHEET 3 REV. Y / COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY (CL600-2D24) STRUCTURAL MAJOR REPAIR (**RII**)

Part: BRACKET — CORRODED (FUSELAGE) · airframe 31,056 hrs · 21,309 cycles

BRACKET ASSY ON STR20R BETWEEN FS280.00 AND FS295.00 HEAVILY CORRODED (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED BRACKET ASSY. AT STGR 20R BETWEEN FS280 AND FS295 REF. CRJ900 SRM 51-42-06-001-001-A01

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

CORROSION FOUND ON STRINGER 24L BETWEEN FS985 AND FS1000. (C-CHECK) RO 2/1/2021 INSTALLED NEW STRINGER 24L BETWEEN FS977 AND FS1007.25 REF CRJ-900 SRM 51-42-21-001-001-A01, CRJ-900 SRM 51-42-06-001-001-A01, AND DWG MM690-35007 REV T. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: FRAME — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

CORROSION ON FRAME FS333.00, SKIN ATTACH FLANGE; BETWEEN STGR-20L - STGR-18L (C-CHECK) RO 2/1/2021 REPLACED FRAME SECTOR, FS333.00, STRINGER 18L-21L PER SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01 & DRAWING SH670-31810 REV Y. CHECKS GOOD. SEE CONTINUATION CARD FOR DETAILS. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

MAIN AVIONICS BAY STR 20R INTERCOSTAL BETWEEN FS310.00 AND FS319.70 CORRODED (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED MAIN AVIONICS BAY STR 20R INTERCOSTAL BETWEEN FS310.00 AND FS319.70 REF. DRWG SH670-31950 REV. Y AND CRJ 900 SRM 51-42-06-001-001-A01. COMPLIED WITH TASK CARD 51-900-1002-SKY

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

MAIN AVIONICS BAY STR 25R CORRODED BETWEEN FS319.70 AND FS333.00 (C-CHECK) RO 2/1/2021 BLENDED CORRODED STGR 25R IN THE A-BAY. FOUND TO BE OUT OF LIMITS. INSTALLED NEW STRINGER 25R FROM F.S. 280.00 TO F.S. 333.00 IN REF DWG SH670-31630, REV K, CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01. LEAK CHECK GOOD. ALSO COMPLIED WITH 51-900-1002-SKY.

Part: STRINGER SPLICE — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

MAIN AVIONICS BAY STR 22R SPLICE AT FS333.00 CORRODED (C-CHECK) RO 2/1/2021 INSTALLED NEW STRINGER SPLICE AT STR 22R AT FS 333.00 REF CRJ-900 SRM 51-23-00-001-001-A01, CRJ-900 SRM 51-42-06-001-001-A01, DWG SH670-32420 REV E. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

MAIN AVIONICS BAY STR 20R CORRODED BETWEEN FS295.00 AND FS319.00 (C-CHECK) RO 2/1/2021 INSTALLED REPLACEMENT STR20R IN MAIN AVIONICS BAY BETWEEN FS295.00 AND FS319.00 REF MHI RJ REO 690-53-21-1299 REV -- DATED 2020-12-29, CRJ-900 SRM 53-00-03-201-001-A02 AND CRJ-900SRM 51-42-06-001-001-A01. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

REPLACE STGR 18R FS477 - FS669.40 DUE TO OUT OF LIMITS CORROSION. (C-CHECK) RO 2/1/2021 REPLACED STRINGER 18R, FS477.00-661.00+46 PER CRJ-900 SRM 53-00-03-201-001-A02, SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01, DRAWING SH690-32170 REV Y, DRAWING SH670-32178 REV-NC & DRAWING SH690-33101 REV M. CHECKS GOOD. SEE CONTINUATION CARD FOR DETAILS. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

MAIN AVIONICS BAY STR 22R FROM FS280.00 TO FS333.00 CORRODED (C-CHECK) RO 2/1/2021 INSTALLED NEW STRINGER IN MAIN AVIONICS BAY AT STR 22R FROM FS280.00 TO FS333.00 REF CRJ-900-SRM 51-42-06-001-001-A01, AND BOMBARDIER DWG SH670-31630 REV NC . COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

MAIN AVIONICS BAY STR 22R CORRODED BETWEEN FS333.00 AND FS349.00 (C-CHECK) RO 2/1/2021 REPLACED STRINGER 22R BETWEEN FS333.00 TO FS349.00 REF CRJ 900 SRM 51-23-00-001-001-A01, 51-42-06-001-001-A01, AND DRWG SH670-31350 REV NC. SEE CONTINUATION FOR DETAILS. CHECKS GOOD. COMPLIED TASK CARD 51-900-1002-SKY.

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

STRINGER 21L AT FS 319-333 HAS EVIDENCE OF CORROSION (C-CHECK) RO 2/1/2021 EVALUATED CORROSION AT STR 21L , 100% EXFOLIATED, FOUND TO BE OUT OF LIMITS. REMOVED CORRODED STRINGER 21L T FS333.00 AND INSTALLED NEW STRINGER 21L AT FS333.00 - FS280.00. REF CRJ 900 SRM 51-42-06-001-001-A01, CRJ 900 SRM 51-42--21-001-001-A01 AND BOMBARDIER DWG SH670-31630 REV K, COMPLETED 51-900-1002-SKY. SEE CONTINUATION CARD FOR DETAILS.

Part: SPAR — CRACKED (LT WING) · airframe 31,056 hrs · 21,309 cycles

L/H SIDE REAR WING SPAR LINK AT FS 797.0 HAS CRACK AT CLEVIS BEARING. (C-CHECK) RO 2/1/2021 CORRECTIVE ACTION COMPLIED WITH ON MX 22193034 JOB 91516157 OP 4, COMPLY WITH SB 670BA-57-016 REV D 9/12/2014 FOR LH AND RH REAR SPAR LINK ASSEMBLY REPLACEMENTS.

Part: FRAME — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

FRAME AT STA 319 FROM STR 21L - 20 L HAS CORROSION (C-CHECK) RO 2/1/2021 INSTALLED NEW FRAME AT FS 319 FROM STR 21L -20L REF CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01 AND DWG SH670-31810 REV Y. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: STRINGER SPLICE — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

F.S 333 AT STRG 26L JOINT STRINGER SPLICE CORRODED (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED STINGER SPLICE AT FS333 STGR26L REF CRJ-900 SRM 51-42-06-001-001-A01 AND REF DWG# SH670-32420 REV E SHEET 1 AND 3. SEE ATTACHED CONTINUATION CARD FOR DETAILS OF WORK PERFORMED. COMPLIED WITH 51-900-1002-SKY. PRESSURE LEAK CHECK GOOD AT THIS TIME.

Part: FRAME — DAMAGED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

PERFORM FRAME SPLICE REPAIR AT FS985 BETWEEN STGR 19L AND 26L IAW CRJ900 SRM 53-00-06-201-001-A03, FIGURE 53-00-06-991-877 SHEET 1 OF 2 TO FACILITATE REMOVAL AND INSTALLATION OF STRINGER 23L (JOB 91516154 OP. 70, CAMP # 21902699) (C-CHECK) RO 2/1/2021 PERFORMED FRAME SPLICE REPAIR TO LOWER FRAME SECTOR AT FS985.00 PER SRM 53-00-06-201-001-A03, REF CRJ900 SRM 51-42-21-001-001-01 AND DWG MM690-35007 REV U. CHECKS GOOD. SEE CONTINUATION CARD FOR DETAILS. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: LONGERON — CORRODED (CARGO DOOR) · airframe 31,056 hrs · 21,309 cycles

CENTER BAGGAGE BAY DOOR UPPER LONGERON AT STRINGER 18L FS 645 IS CORRODED. (C-CHECK) RO 2/1/2021 REPAIRED CENTER BAGGAGE BAY DOOR UPPER LONGERON AT STRINGER 18L FS 645 REF MHI RJ REO 690-53-31-543 REV -- DATED 2021-01-07. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECKS GOOD . SEE CONTINUATION CARDS FOR DETAILS

Part: RETAINER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

LH SIDE RAIL RETAINER FS 677-FS720 HAS CORROSION (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED WITH NEW LH SIDE RAIL RETAINER FROM FS677 - FS720 REF CRJ-900 AMM 53-00-49-400-801-A07

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

CORROSION ON LH FLOOR SEAT RAIL LBL 9 BETWEEN APPROX. FS 699 €“ FS 856 (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED WITH NEW LH FLOOR SEAT RAIL AT APPROX FS699 - FS856 REF CRJ900 AMM 53-00-49-400-801-A07

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

R/H SIDEWALL SEAT TRACK BETWEENFS865.00 AND FS969.00 HAS POSSIBLE CORROSION. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED R/H SIDE WALL BETWEEN STA 865 TO 969 SEAT TRACK IAW CRJ900 AMM 53-00-49-400-801 (CONFIG A07)

Part: STRIKER — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

GALLEY SERVICE DOOR LOWER SILL STRIKER HAS CORROSION WERE AFT AND FWD DOOR STOP FITTING SITS. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED CORRODED SEAL STRIKER AT GALLEY SERVICE DOOR REF CRJ900 SRM 51-42-06-001-001-A01 AND BOMBARDIER DRW SH670-31412 REV C. LEAK CKECK GOOD AT THIS TIME. ALSO COMPLIED WITH 51-900-1002-SKY.

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

SIDE SEAT TRACK SECTION, L/H, APPROX. FS 744.15 TO 761.85 CORRODED. (C-CHECK) RO 2/1/2021 INSTALLED NEW SIDE SEAT TRACK SECTION, L/H, APPROX. FS 744.15 TO 761.85 REF CRJ-200-AMM CRJ-900-AMM 53-00-49-400-801-A07. SEE CONTINUATION CARD FOR DETAILS

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

STRINGER 27 FROM F.S. 280 TO F.S. 295 HAS MULTIPLE AREAS OF CORROSION ON ATTACHMENT FLANGE. (C-CHECK) RO 2/1/2021 REPLACED STRINGER 27, FS280.00-295.00 PER SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01 & DRAWING SH670-31630 REV K. CHECKS GOOD. SEE CONTINUATION CARD FOR DETAILS. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: STRINGER — CRACKED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

SUSPECTED CRACK ON STR.3L LINTEL AT FS 280.00. (C-CHECK) RO 2/1/2021 REPAIRED STR.3L LINTEL AT FS 280.00. REF CRJ-900-SRM 53-21-23-201-001-A01. CRJ-900-SRM 51-42-21-001-001-A01 AND SB670BA-53-040 REV C DATED 09/20/2012. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SERVICE BULLETIN 670BA-53-040 REV C DATED 09/20/2012. FUSELAGE -CENTER FUSELAGE , PRIMARY STRUCTURE FS280.00 TO FS295.00- INSPECTION AND REINFORCEMENT OF LINTEL STRINGER 3 OF THE MAIN PASSENGER DOOR , PART A AND B INCORPORATED

Part: CHANNEL — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

AVIONICS BAY TCAS LOWER CHANNEL HAS SEVERAL AREAS OF CORROSION. (C-CHECK) RO 2/1/2021 REPLACED TCAS LOWER ANTENNA CHANNEL PER SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01 & DRAWING SH670-30023 REV G. CHECKS GOOD. SEE CONTINUATION CARD FOR DETAILS. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: SKIN — CHAFED (LT WING TE FLAP) · airframe 31,056 hrs · 21,309 cycles

*LH INBD FLAP CHAFFED UNDER PANEL 584AB ON THE INNER UPPER SKIN, JUST BELOW THE FLAP VANE ACTUATOR (MARKED) (C-CHECK) RO 2/1/2021 LH INBD FLAP REMOVED THE CHAFFED UNDER PANEL 584AB ON THE INNER UPPER SKIN, JUST BELOW THE FLAP VANE ACTUATOR REF CRJ-900 SRM 51-12-00-001-001-A01. COMPLIED WITH BOMBARDIER REO 670-57-52-352 REV -- DATED 2017-03-28 STEP 1-7

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*STGR22L FS333.00 - FS349.00 HAS CORROSION ON MULTIPLE AREAS. (C-CHECK) RO 2/1/2021 REPLACED STRINGER 22L, FS 333.00-385.00 PER SRM 53-00-03-201-001-A02, SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01, DRAWING SH670-31630 REV K. CHECKS GOOD. SEE CONTINUATION CARD FOR DETAILS. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

CORROSION ON LH FLOOR SEAT RAIL LBL 9 BETWEEN APPROX. FS 379.00 €“ FS 485.00. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED L/H FLOOR SEAT RAIL LBL 9 BETWEEN APPROX. REF CRJ 900, AMM 53-00-49-000-801-A07 AND AMM 53-00-49-400-801-A07.

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

CORROSION ON LH FLOOR SEAT RAIL LBL 9 BETWEEN APPROX. FS 485.00 €“ FS 581.00. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED LH FLOOR SEAT RAIL LBL 9 FROM FS 485.00 TO FS 581.00 REF: CRJ900 AMM 53-00-49-000-801-A07, CRJ900 AMM 53-00-49-400-801-A07

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

LH SIDE SEAT RAIL FS 672 TO FS 722 CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED SIDE SEAT TRACK IN MAIN CABIN AT FS FS 672 TO FS 722 ON LEFT HAND SIDE IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) (SEE CONTINUATION FOR FUTHER DETAILS)

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

RH SIDE SEAT RAIL FS 661.00+90 TO FS 670 IS CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED SIDE SEAT RAIL IN MID CABIN AT FS661.00+90 TO FS670.00 ON RIGHT HAND SIDE IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) (SEE CONTINUATION FOR FUTHER DETAILS)

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

LH SIDE SEAT RAIL FS 907 TO FS 969 IS CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED REPLACED SIDE SEAT RAIL IN AFT CABIN AT FS907.00 TO FS969.00 ON LEFTHAND SIDEIAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) TOOL ID: TUC 6037 DUE DATE: 31JAN21 (SEE CONTINUATION FOR FURTHER DETAILS)

Part: DOOR SILL — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

GALLEY SERVICE DOOR LOWER SILL MOUNTING ANGLE, CORROSION UNDER FWD AND AFT LOWER LATCH FITTINGS. (C-CHECK) RO 2/1/2021 REMOVED & REPLACED GALLEY SERVICE DOOR LOWER SILL MOUNTING ANGLE, CORROSION UNDER FWD AND AFT LOWER LATCH FITTING REF CRJ-900 SRM 51-42-06-001-001-A01,SRM 51-42-21-001-001-A01,SRM 51-42-34-001-001-A01 AND DWG#SH670-31950 REV Y. / SEE CONTINUE CARD FOR MORE DETAILS.COMPLIED WITH 51-900-1002-SKY

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

LH SIDE SEAT RAIL FS 379.00 TO FS 483.00 CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED LH SIDE SEAT RAIL FROM FS 379.00 TO FS 483.00 REF: CRJ900 AMM 53-00-49-000-801-A07, CRJ900 AMM 53-00-49-400-801-A07

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

RH SIDE SEAT RAIL FS 379 TO FS 483 IS CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED & REPLACED WITH NEW RH SIDE SEAT RAIL (P/N SH670-32233-3)FS 379 TO FS 483 REF CRJ-900 SRM 53-00-49-400-801-A07.

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

RH SIDE SEAT RAIL FS 661.00+16 TO FS 661.00+90 IS CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED SIDE SEAT RAIL IN MID CABIN AT FS661.00+16 TO FS661.00+90 ON RIGHTHAND SIDE IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) (SEE CONTINUATION FOR FURTHER DETAILS)

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

RH SIDE SEAT RAIL FS 785 TO FS 847.00+16 IS CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED SEAT RAIL ON RH SIDE FS 785-847+16 IAW CRJ900 AMM 53-00-49-400-801-A07

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

LH SIDE SEAT RAIL FS 573.00 TO FS 661.00+16 CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED SEAT TRACK IN MAIN CABIN AT FS573.00 TO FS661.00+16 ON LEFTHAND SIDE IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) (SEE CONTINUATION FOR FUTHER DETAILS)

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

RH SIDE SEAT RAIL FS 672 TO FS 672 IS CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED SEAT RAIL R/H SIDE, FS 672.00 TO FS 722.00 REF. CRJ 900, AMM 53-00-49-400-801-A07.

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

RH SIDE SEAT RAIL FS 743 TO FS 763 IS CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED SIDE SEAT RAIL IN MID CABIN BETWEEN FS743.00 TO FS763.00 ON RIGHTHAND SIDE IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) TOOL ID: TUC 7831 DUE DATE: 31JAN21 (SEE CONTINUATION FOR FURTHER DETAILS)

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

LH SIDE SEAT RAIL FS 661.00+16 TO FS 672 CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 INSTALLED NEW SEAT TRACK IN MAIN CABIN AT FS661.00+16 TO FS672.00 ON LEFTHAND SIDE IAW CRJ / 900 AMM 53-00-49-400-801 (CONFIG A07) (SEE CONTINUATION FOR FURTHER DETAILS)

Part: FRAME — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

FRAME FS501.00 BETWEEN STR24L €“ STR25L. HAS EXFOLIATED CORROSION (C-CHECK) RO 2/1/2021 INSTALLED NEW FRAME SECTION AT FS501.00 BETWEEN STR24L €“ STR25L REF BOMBARDIER DRAWING SH690-33750 REV Y, CRJ900 SRM 51-42-06-001-001-A01 AND REO 690-53-31-544 REV -- DATED 2020-12-30. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD. SEE CONTINUATION CARD FOR DETAILS

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

LH SIDE SEAT RAIL FS 483.00 TO FS 573.00 CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED SIDE SEAT TRACK IN MAIN CABIN AT FS 483.00 TO FS 573.00 ON LEFT HAND SIDE IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) (SEE CONTINUATION FOR FUTHER DETAILS)

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

RH SIDE SEAT RAIL FS 573 TO FS 661.00+16 IS CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED SEAT TRACK IN MAIN CABIN AT FS573.00 TO FS661.00+16 ON RIGHTHAND SIDE IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07)

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

RH SIDE SEAT RAIL FS 483 TO FS 573 IS CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED RH SIDE SEAT RAIL FROM FS 483 TO FS 573 REF: CRJ900 AMM 53-00-49-000-801-A07, CRJ900 AMM 53-00-49-400-801-A07

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

LH SIDE SEAT RAIL FS 785 TO FS 847.00+16 IS CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED L/H SEAT RAIL FS 785 TO FS 847.00+16. REF. CRJ 900, AMM 53-00-49-400-801-A07.

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

FLOOR SEAT TRACK SECTION FS 693.00 TO FS 839.00 RBL 9.0 CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED WITH NEW FLOOR SEAT TRACK SECTION FROM FS693.00 TO FS839.00 RBL 9 REF CRJ900 AMM 53-00-49-400-801-A07

Part: SEAT TRACK — CORRODED (CABIN) · airframe 31,056 hrs · 21,309 cycles

FLOOR SEAT TRACK SECTION FS 581.00 TO FS 661.00 + 32 RBL 9.0 CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED WITH NEW FLOOR SEAT TRACK SECTION FS581.00 TO FS661.00+32 RBL 9.0 REF CRJ900 AMM 53-00-49-400-801-A07

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

CORROSION ON RH FLOOR SEAT RAIL BETWEEN APPROX. FS 847.00+48 €“ FS 977.00. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED FLOOR SEAT RAIL IN AFT CABIN BETWEEN FS847.00+48 TO FS 977.00 ON RIGHTHAND SIDE IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) ( SEE CONTINUATION FOR FURTHER DETAILS)

Part: CARGO TRACK — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

CORROSION ON LH FLOOR SEAT RAIL LBL 27 BETWEEN APPROX. FS 379.00 €“ FS 485.00. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACEDLH FLOOR SEAT RAIL LBL 27 BETWEEN APPROX. FS 379.00 - FS 485.00. REF CRJ 900, AMM 53-00-49-000-801-A07, AMM 53-00-49-400-801-A07.

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

FLOOR SEAT TRACK SECTION FS 485.00 TO FS 581.00 RBL 9.0 CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED FLOOR SESAT TRACK SECTION FS485.00 TO FS581.00 TO RBL 9.0 REF CRJ900 53-00-49-400-801-A07

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

*FS581.00 TO FS661.00+32.00 RBL9 R/H CENTER SEAT TRACK HAS SEVERAL SPOTS OF POSSIBLE SURFACE CORROSION (MARKED) (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED SEAT TRACK, FS 581.00 TO FS 661.00+32.00 RBL 9 R/H CENTER. REF AMM 53-00-49-000-801 (CONFIG A07) AND AMM53-00-49-400-801 (CONFIG A07).

Part: STRINGER — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

*FS661.00+16.00 TO FS661.00+32.00 STGR18R HAS TWO SPOTS OF CORROSION (MARKED) (C-CHECK) RO 2/1/2021 REMOVED CORROSION AT 28 EACH AREAS ON STGR 18R FS661.00+16 - FS 661.00+32 REF CRJ 900 SRM 51-21-06-001-001-A01. EVALUATED BLENDS AND FOUND TO BE OUT OF LIMITS REF CRJ 900 53-31-03-101-004-A05. STRINGER REPLACEMENT REQUIRED. REPLACMENT ACCOMPLISHED ON JOB 91516154 OP 184 CAMP 21922058

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

*FS581.00 TO FS661.00+32.00 LBL9 L/H CENTER SEAT TRACK HAS SEVERAL SPOTS OF POSSIBLE SURFACE CORROSION (MARKED) (C-CHECK) RO 2/1/2021 REPLACED CENTER SEAT TACK AT FS581.00 TO FS661.00+32 LBL9 REF CRJ900 AMM 53-00-49-400-801-A07

Part: FLOORBEAM — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

*FS565.00 L/H FLOOR SILL HAS SURFACE CORROSION (MARKED) (C-CHECK) RO 2/1/2021 RMOVED AND INSTALLED NEW L/H FLOOR SILL AT FS565 REF CRJ-900-SRM 51-42-06-001-001-A01 AND DWG SH690-32170 REV AD. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECKS GOOD. SEE CONTINUATION CARD FOR DETAILS

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

FLOOR SEAT TRACK SECTION FS 661.00 + 32 TO FS 693.00 LBL 9.0 CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED FLOOR SEAT TRACK SECTION FS 661.00 + 32 TO FS 693.00 LBL 9.0 REF CRJ900, AMM 53-00-49-000-801 (CONFIG A07) AND AMM 53-00-49-400-801 (CONFIG A07).

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*SEVERAL SPOTS OF CORROSION ON STGR 24L BETWEEN FS501.00 & FS517.00 (MARKED) (C-CHECK) RO 2/1/2021 REPAIRED STGR 24L BETWEEN FS501.00 & FS517.00 REF CRJ-900 SRM 51-42-06-001-001-A01 , CRJ-900 SRM 51-42-21-001-001-A01, DWG SH690-30006 REV C AND DWG SH690-33200 REV M. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: DOOR FRAME — DAMAGED (CENTER CARGO) · airframe 31,056 hrs · 21,309 cycles

FOUND AN EXSISTING NON-PRODUCTION .098"DIA. HOLE COMMON TO CENTER CARGO DOOR OPENING, LOWER SILL CLOSE OUT PLATE AND AFT GUSSET. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED CENTER CARGO DOOR AFT GUSSET REF. DWG SH 670-33750 REV. AA, CRJ 900 SRM 51-42-21-001-001-A01. REPAIRED HOLE IN UNDERLYING STRUCTURE REF. CRJ 900 SRM 51-12-00-.001-001-A01. CW 51-900-1002-SKY

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

STRINGER 26L BETWEEN F.S. 333 AND F.S. 364 MULTIPLE AREAS OF CORROSION. (C-CHECK) RO 2/1/2021 STRINGER 26L BETWEEN F.S. 333 AND F.S. 364 FOUND TO BE OUT OF LIMITS DUE TO CORROSION. INSTALLED NEW STGR 26L BETWEEN FS333.0 TO FS364.00 REF CRJ 900 SRM 51-42-06-001-001-A01 AND DWG SH670-31350 REV A. LEAK CHECK GOOD AT THIS TIME. ALSO COMPLIED WITH 51-900-1002-SKY.

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

SIDE SEAT TRACK SECTION, L/H, APPROX. FS 847.16 TO FS 907.00 HAS CORROSION SEVERAL PLACES AT PREVIOUS BLENDS. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED SIDE SEAT RAIL IN AFT CABIN AT FS847.16 TO FS907.00 LEFTHAND SIDE IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) TOOL ID: TUC 6037 DUE DATE: 31JAN21

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

SIDE SEAT TRACK MOUNTING CHANNEL, R/H, HAS CORROSION AT APPROX. FS 813.70. (C-CHECK) RO 2/1/2021 CORROSION IS 100% THROUGH FOUND TO BE OUT OF LIMITS IAW CRJ900 SRM 53-00-00-101-001-A01.REMOVED AND REPLACED SEAT TRACK CHANNEL ON JOB 91516154 OP 207 TRANS 21933878

Part: STRINGER SPLICE — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

F.S. 333 AT STGR 26R JOINT STRINGER SPLICE CORRODED. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED JOINT STRINGER SPLICE AT FS333 STRG 26R. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH670-32420 REV E. AND COMPLIED WITH TASK CARD 51-900-1002-SKY. NO LEAKS NOTED.

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

L/H FLOOR SEAT RAIL SECTION FS 485.00 TO FS 581.00 AT LBL 27.0 HAS GOUGES AT FS 565.00. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED L/H FLOOR SEAT RAIL SECTION FS 485.00 TO FS 581.00 AT LBL 27.0 REF CRJ 900 AMM 53-00-49-000-801-A07 AND AMM 53-00-49-400-801-A07.

Part: DOOR SILL — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

* PASSENGER DOOR LOWER SILL FWD AND CENTER UPPER FLOOR SUPPORT ANGLES CORRODED. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED THE PASSENGER DOOR LOWER FWD SILL AND CENTER UPPER FLOOR SUPPORT. REF CRJ900 SRM 51-42-06-001-001-A01, REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH670-31810 REV-AE. OPS CHECKS GOOD. COMPLIED WITH SKYWEST TASKCARD 51-900-1002-SKY.

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

FLOOR SEAT TRACK SECTION FS 661.00 + 32 TO FS 693.00 RBL 9.0 CORRODED SEVERAL PLACES AT PREVIOUS BLENDS. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED NEW FLOOR SEAT TRACK BETWEEN FS661.00+32 TO FS 693.00 RBL 9 IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) (SEE CONTINUATION FOR FURTHER DETAILS)

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

SIDE SEAT TRACK SECTION, R/H, APPROX. FS 847.16 TO FS 907.00 HAS CORROSION SEVERAL PLACES AT PREVIOUS BLENDS. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED SIDE SEAT RAIL IN AFT CABIN AT FS847.16 TO FS907.00 ON RIGHTHAND SIDE IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) TOOL ID: TUC 6037 DUE DATE: 31JAN21

Part: STRINGER SPLICE — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

F.S. 333 AT STGR 25R JOINT STRINGER SPLICE CORRODED. (C-CHECK) RO 2/1/2021 REPLACED JOINT STRINGER SPLICE AT FS333.00 STGR 25R REF CRJ 700 SRM 51-42-06-001-001-A01, AND BOMBARDIER DWG SH670-32420 REV -E. SEE CONTINUATION FOR DETAILS. CHECKS GOOD. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: DOOR SILL — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

PASSENGER DOOR LOWER SILL FWD FLOOR SUPPORT CUP CORRODED. (C-CHECK) RO 2/1/2021 REPLACED NEW PASSENGER DOOR LOWER SILL FWD FLOOR SUPPORT CUP REF CRJ900 SRM TASK 51-42-21-001-001-A01 HI-LITE FASTENERS AND DWG: SH670-31810, REV: AE

Part: FLOORBEAM — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*FS280.00 AFT FACE LWR SECTION FLOORBOARD ATTACHMENT ANGLE HAS SEVERAL SPOTS OF CORROSION BETWEEN STGR26L & STGR26R (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED FLOORBOARD ATTACHMENT ANGLES STGR 26L AND STGR 26R AT FS280.00 REF CRJ900 SRM 51-42-06-00-001-A01

Part: DOOR SILL — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

* PASSENGER DOOR LOWER SILL AFT FLOOR SUPPORT CUP CORRODED. (C-CHECK) RO 2/1/2021 REPLACED NEW PASSENGER DOOR LOWER SILL AFT FLOOR SUPPORT CUP REF CRJ900 SRM TASK 51-42-21-001-001-A01 HI-LITE FASTENERS AND DWG: SH670-31810, REV: AE. COMPLIED WITH TASK CARD 51-900-1002-SKY

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

* FLOOR SEAT RAIL SECTION FS 349.00 TO FS 485.00 RBL 9.0 CORRODED AT FWD END. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED SEAT RAIL AT FS 349 - 485 RBL 9 IAW CRJ900 AMM 53-00-49-400-801-A07

Part: FRAME — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* FS 364.00 FRAME CORRODED FWD SIDE NEAR STGR 27. (C-CHECK) RO 2/1/2021 REPLACED FS364.00 LOWER FRAME SECTOR PER SRM 53-21-23-201-008-A01, SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01 & DRAWING SH670-32050 REV J. CHECKS GOOD. SEE CONTINUATION CARD FOR DETAILS. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

LH PAX SEAT SIDE RAIL MOUNTING EXTRUSION HAS CORROSION BETWEEN FS785.15 AND FS797.00 (FLAGGED). (C-CHECK) RO 2/1/2021 CORROSION WAS 100% THROUGH,FOUND TO BE OUT OF LIMITS IAW CRJ 900 SRM 53-0-00-101-001-A01. REMOVED AND REPLACED CHANNEL ON JOB 91516154 OP 198 TRANS 21933637

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

STRINGER 25R BETWEEN F.S. 333 AND F.S. 349 HAS MULTIPLE AREAS OF CORROSION. (C-CHECK) RO 2/1/2021 STRINGER 25R BETWEEN FS 333 AND FS 364 IS EXFOLIATED 100% MATERIAL LOSS. FOUND OUT OF LIMITS. REF. CRJ900, SRM53-21-23-101-003-A02. INSTALLED NEW STRINGER 25R FROM FS333 TO FS364 REF BOMBARDIER DWG SH670-32050 REV-J AND CRJ900 SRM 51-42-06-001-001-A01, CRJ900 SRM 51-42-21-001-001-A01.LEAK CHECK GOOD AT THIS TIME. ASLO COMPLIED WITH 51-900-1002-SKY.

Part: FLOOR SUPPORT — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*RIGHT HAND FLOOR SILL CORRODED, FS349.00 €“ FS364.00. (C-CHECK) RO 2/1/2021 REMOVE CORROSION FOR RH FLOOR SILL FROM FS 349.00 TO FS 364.PART HAS 100% MATERIAL LOSS AT FS 355. LOCATED, DRILLED AND INSTALLED NEW R/H FLOOR SILL REF CRJ900 SRM 51-40-11-001-001-A01, DWG SH690-32170, REV: AD. COMPLIED WITH 51-900-1002-SKY.LEAK CHECK GOOD AT THIS TIME.

Part: FLOOR SUPPORT — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*RIGHT HAND FLOOR SILL CORRODED, FS280.00- FS300.00. (C-CHECK) RO 2/1/2021 REPLACED RH FLOOR SILL, FS280.00-319.00 PER CRJ-900 SRM 51-42-06-001-001-A01, 51-42-21-001-001-A01, DRAWING SH690-32170 REV AD, & DRAWING SH670-32172 REV E . SEE ATTACHED CONTINUATION CARD FOR DETAILS OF WORK PERFORMED. CHECKS GOOD. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*STGR21R FS333.00 €“ FS349.00 HAS CORROSION ON MULTIPLE AREAS. (C-CHECK) RO 2/1/2021 REPLACED STGR21R FROM FS333.00 TO FS379.00 REF CRJ 900 SRM 51-42-06-01-001-A01 AND DWG SH670-31350 REV A. SEE CONTINUATION CARD FOR DETAILS. CHECKS GOOD. COMPLIED WITH 51-900-1002-SKY. PRESSURE CHECK GOOD

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*STGR21R, FS319.00 €“ FS333.00, HAS CORROSION ON MULTIPLE AREAS. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED STGR 21R FROM FS280 TO FS333. REF. CRJ900 SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01 AND DWG# SH670-31630 REV. K COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*STGR21R SPLICE AT FS333.00 HAS CORROSION ON MULTIPLE AREAS. (C-CHECK) RO 2/1/2021 INSTALLED NEW STRINGER SPLICE AT FS 333.00 STGR 21R REF CRJ-900 SRM 51-42-06-001-001-A01 , DWG SH670-32420 REV A. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECKS GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: FLOOR SUPPORT — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*RIGHT HAND FLOOR SILL CORRODED, FS305.00 €“ FS319.00. (C-CHECK) RO 2/1/2021 CORROSION ON R/H SILL SPLICE ANGLE FOUND TO BE OUT OF LIMITS. REF: CRJ900 SRM 53-00-00-101-001-A01. REMOVED AND INSTALLED NEW SPLICE ANGLE. REF: DWG SH690-32170 REV AD, CRJ900 SRM 51-42-06-001-001-A01, CRJ900 SRM 52-42-13-001-001-A01. SKY CARD 51-900-1002 COMPLETED.

Part: DOOR SILL — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

* PASSENGER DOOR LOWER SILL LOWER FLOOR SUPPORT ANGLE CORRODED SEVERAL PLACES. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED PASSENGER DOOR LOWER SILL LOWER SUPPORT ANGLE REF BOMBARDIER DWG SH670-31810 REV AE, CRJ900 SRM 51-42-21-001-001-A01, AND CRJ900 SRM 51-41-02-001-001-A01. COMPLIED WITH 51-900-1002-SKY.

Part: FRAME — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* FS 533.00 FRAME BELOW L/H FLOOR SILL AT APPROX STGR 19L CORRODED AFT SIDE (C-CHECK) RO 2/1/2021 REPAIRED FS 533.00 FRAME BELOW L/H FLOOR SILL AT APPROX STGR 19L REF CRJ 900 SRM 53-00-06-201-001-A03 , CRJ 900 SRM 51-42-06-001-001-A01 , DWG SH690-33121 REV. B., DWG SH690-33174 REV. B., REO 690-53-31-540, REV--, DATED 2020-12-22.COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: DOOR SILL — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

* GALLEY SERVICE DOOR LOWER SILL FWD AND AFT SPIGOT FITTINGS HAVE CORRODED ATTACHMENT BOLTS. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED, FWD AND AFT GALLEY SERVICE DOOR, LOWER SILL FITTINGS ATTACHMENT BOLTS. 6 EA AFT FITTING, AND SIX EA FWD FITTING . / REF CRJ900 SRM 51-41-02-001-001-A01

Part: PLATE — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* FWD CARGO FLOOR PANEL SUPPORT PLATE AT FS 629.00 STGR 27 HAS CORROSION. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED FWD CARGO FLOOR PANEL SUPPORT PLATE AT FS629.. STGR 27 REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH690-33600-3 REV Y SHEET 3

Part: DOOR SILL — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

* GALLEY SERVICE DOOR LOWER SILL LOWER FLOOR SUPPORT ANGLE CORRODED. (C-CHECK) RO 2/1/2021 REMOVED CORROSION ON GALLEY SERVICE DOOR LOWER SILL LOWER FLOOR SUPPORT ANGLE. REF: CRJ-900 SRM 51-21-16-001-001-A01. FOUND TO BE OUT OF LIMITS. REF: CRJ-900 SRM 53-21-23-101-002-A02 AND DWG. SH670-31986 REV NC. REMOVED AND REPLACED LOWER SILL SUPPORT ANGLE. REF: CRJ-900 SRM 51-42-06-001-001-A01, CRJ-900 SRM 51-42-21-001-001-A01 AND DWG SH670-31950 REV Y. 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. COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY. SEE CONTINUATION CARD FOR DETAILS.

Part: FRAME — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* FS 533.00 FRAME HAS CORROSION AFT SIDE BETWEEN STGR 26L AND 27. (C-CHECK) RO 2/1/2021 REPAIRED FS 533.00 FRAME AFT SIDE BETWEEN STGR 26L AND 27. REF MHI RJ REO 690-53-31-538 REV -- DATED 2020-12-16. PRESSURE CHECK GOOD AND SEE CONTINUATION CARD FOR DETAILS

Part: DOOR SILL — CORRODED (FWD CARGO) · airframe 31,056 hrs · 21,309 cycles

* FWD CARGO DOOR OPENING LOWER SILL CLOSE OUT PLATE FWD GUSSET HAS CORROSION. (C-CHECK) RO 2/1/2021 REMOVED CORROSION DAMAGE ON FWD CARGO DOOR OPENING, LOWER SILL CLOSE OUT PLATE FWD GUSSET REF. CRJ-900 SRM 51-21-06-001-001-A01. / BLENDED AREA FOUND TO BE OUT OF LIMITS. REF CRJ900 SRM 53-31-23-001-001-A01 / . INSTALLED NEW GUSSET PLATE. REF: DWG SH690-33750 REV: AF, CRJ900 SRM 51-42-22-001-001-A01. SKY CARD 51-900-1002 COMPLETED. / *

Part: FRAME — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* FS 645..00 FRAME BELOW L/H FLOOR SILL AT APPROX STGR 19L CORRODED FWD AND AFT SIDE. (C-CHECK) RO 2/1/2021 PERFORMED FRAME SPLICE REPAIR AT FS645 FROM STGR 16L TO BAGGAGE BAY UPPER LONGERON REF.DWG SH690-33100 REV N,CRJ-900-SRM 51-42-06-001-001-A01,CRJ-900-SRM 51-42-21-001-001-A01,CRJ-900-SRM 51-42-14-001-001-A01, CRJ-900-SRM 51-42-10-001-001-A01, CRJ-900-SRM 53-00-06-201-001-A03. COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY AND PRESSURE CHECK GOOD .SEE CONTINUATION CARD FOR DETAILS

Part: FRAME — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* FS 549..00 FRAME BELOW L/H FLOOR SILL AT APPROX STGR 19L CORRODED AFT SIDE (C-CHECK) RO 2/1/2021 BLENDED AND REPAIRED LH FLOOR SILL CORROSION AT APPROX STGR 19L FS 549.0 REF MHIRJ REO 690-53-31-540 REV-- DATE2020-12-22. LEAK CHECKS GOOD AT THIS TIME. ALSO COMPLIED 51-900-1002-SKY.

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* AVIONICS BAY INTERCOSTAL HAS CORROSION AT STR21L IN BETWEEN FS 319.70 TO FS 333.0 (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED INTERCOSTAL/BACKUP SILL AT STR21L BETWEEN FS310.00 AND FS333.00 REF. BOMBARDIER DWG SH670-31810 REV AE AND CRJ900 SRM 51-42-06-001-001-A01. 51-900-1002-SKY (CL600-2D24) COMPLIED WITH.

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*CORROSION ON STGR 20R SPLICE BETWEEN FS 469.00 €“ 485.00. MARKED. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED STGR SPLICE AT STGR 20R BETWEEN FS 469.00 - FS 485.00 REF CRJ900 SRM 51-42-06-001-001-A01, DWG DWG SH670-30006 REV NC. COMPLIED WITH SKY 51-900-1002 AND PRESSURE CHECKS GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: INTERCOSTAL — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*AVIONICS BAY INTERCOSTAL AT STR26L IN BETWEEN FS 349.0 AND FS 364.0 HAS CORROSION (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED INTERCOSTAL AT STGR 26L BETWEEN FS 349.00 AND FS 364.00. REF. DWG SH670-32050. REV J, CRJ 900 SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01. / COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: INTERCOSTAL — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* INSIDE AVIONICS BAY STR 27L INTERCOSTAL HAS CORROSION. (C-CHECK) RO 2/1/2021 REPLACED INTERCOSTAL AT AVIONICS BAY DOOR CUTOUT, STRINGER 27 PER SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01 & DRAWING SH670-32050 REV J. CHECKS GOOD. SEE CONTINUATION CARD FOR DETAILS. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: SHAFT — CORRODED (EMERGENCY EXIT) · airframe 31,056 hrs · 21,309 cycles

*LH AFT EMER DOOR HANDLE TORQUE SHAFT AND LATCH MOUNT HARDWARE CORRODED. (C-CHECK) RO 2/1/2021 INSTALLED NEW HARDWARE WHERE REQUIRED ON L/H AFT EMER DOOR REF. CRJ900 AMM. 52-21-02-400-801-A02 CALIBRATED TOOL# TUC5656 DUE: 31 MAY 21

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*CORROSION ON STGR 21R BETWEEN FS 469.00 €“ 485.00. MARKED. (C-CHECK) RO 2/1/2021 SPLICED IN NEW SECTION OF STGR 21R BETWEEN FS 469.00 - 485.00 REF REO 690-53-21-1293 REV -- DATE 2020-12-08, CRJ900 SRM 53-00-03-201-001-A02, CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-40-11-001-001-A01. / COMPLIED WITH SKY 51-900-1002 SKY. PRESSURE CHECK GOOD AND SEE CONTINATION CARD FOR DETAIL

Part: STRAP — CORRODED (EMERGENCY EXIT) · airframe 31,056 hrs · 21,309 cycles

*LOWER INNER STRAP BELOW LH EMER EXITS HAS EVIDENCE OF CORROSION BETWEEN APPROX FS 702 AND FS 754. (C-CHECK) RO 2/1/2021 REPAIRED LOWER INNER STRAP BELOW LH EMER EXITS BETWEEN FS702 AND FS754 REF REO 690-53-41-249 REV.-- DATED 2020-12-17 ALL STEPS COMPLETED. SEE CONTINUE CARD FOR DETAILS.

Part: FRAME — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* AVIONIS BAY AT FS 319.70 AT APPROX STR 27 FRAME HAS CORROSION. (C-CHECK) RO 2/1/2021 INSTALLED NEW FORMER FRAME SECTOR FS319 FROM STR 21L TO STR 23R REF DWG SH670-31630, REV K, CRJ900 SRM 53-00-06-201-006-A01,, AND CRJ900 SRM 51-42-06-001-001-A01, COMPLIED WITH 51-900-1002 SKY AND SEE CONTINUATION CARD FOR DETAILS

Part: LATCH — CORRODED (EMERGENCY EXIT) · airframe 31,056 hrs · 21,309 cycles

*RH FWD EMER DOOR HANDLE TORQUE SHAFT AND LATCH MOUNT HARDWARE CORRODED. (C-CHECK) RO 2/1/2021 INSTALLED NEW HARDWARE WHERE REQUIRED ON R/H FWD EMER DOOR REF. CRJ900 AMM. 52-21-02-400-801-A02 CALIBRATED TOOL# TUC5656 DUE: 31 MAY 21

Part: SUPPORT — CRACKED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

*AFT CARGO DOOR FWD ROLLER TRACK SUPPORT CHANNEL ON AFT SIDE OF FRAME 1000 AT STRINGER 16L IS CRACKED AND GOUGED. (C-CHECK) RO 2/1/2021 AFT CARGO DOOR FWD ROLLER TRACK SUPPORT CHANNEL FOUND TO BE OUT OF LIMITS REF CRJ900 SRM 23-61-23-101-001-A01. SEE CONTINUATION CARD FOR DETAILS. REMOVED AND REPLACED WITH NEW AFT CARGO ROLLER TRACK SUPPORT CHANNEL REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG: MM670-35060, REV T. COMPLIED WITH 51-900-1002-SKY

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*CORROSION ON STGR 26L, BETWEEN FS 985.00 €“ 1047.00. AREAS MARKED. (C-CHECK) RO 2/1/2021 REPAIRED STRINGER AT STGR 26L BETWEEN FS985.00 TO FS 1047 REF CRJ900 SRM 51-42-06-001-001-A01, CRJ -900 SRM 51-42-21-001-001-A01 AND DWG# MM690-35007 REV. U. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*CORROSION ON STGR 21R SPLICE BETWEEN FS 469.00 €“ 485.00. MARKED. (C-CHECK) RO 2/1/2021 INSTALLED STRINGER 21R SPLICE BETWEEN FS 469.00 €“ 485.00. REF SH670-30006 REV C, AND CRJ900 SRM 51-42-06-001-001-A01. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: FRAME — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* AVIONICS BAY AT FS 349.0 FRAME FLANGE HAS AREAS OF CORROSIONI IN BETWEEN STR 25L TO STR26R (C-CHECK) RO 2/1/2021 INSTALLED NEW FRAME IN AVIONICS BAY AT FS 349.0 BETWEEN STR 25L TO STR26R REF CRJ-900-SRM 51-42-21-001-001-A01, CRJ-900-SRM 51-42-06-001-001-A01, DWG 690-31350 REV M, AND DWG SH670-31810 REV AE. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: FRAME — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* AVIONICS BAY AT FS 333.0 IN BETWEEN STR 25L TO STR 26R FRAME FLANGE HAS CORROSION FWD AND AFT OF FRAME. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED FRAME SECTION FS333 FROM STRG 21R TO STRG 26R. REF CRJ900 SRM 51-42-06-001-001-A01 AND REF CRJ900 SRM 51-42-21-001-001-A01. AND DWG SH670-32420 REV E. PRESSURE CHECKS GOOD. COMPLIED WITH TASK 51-900-1002-SKY.

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*CORROSION ON STGR 23L, BETWEEN FS 985.00 €“ 1051.00. AREAS MARKED. (C-CHECK) RO 2/1/2021 INSTALLED NEW STRINGER 23L BETWEEN FS 985.00 €“ 1051.00 REF CRJ 900 SRM 51-42-06-001-001-A01 AND CRJ-900 SRM 51-42-21-001-001-A01 AND DRAWING MM690-35007 REV U.. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* AVIONICS BAY AT STR21L INTERCOSTAL HAS CORROSION FROM FS 333 TO FS349.0 (C-CHECK) RO 2/1/2021 REPLACED INTERCOSTAL/BACK-UP SILL AT STRINGER 21L, FS333.00-349.00 PER SRM 51-42-06-001-001-A01 & DRAWING SH670-31810 REV AE. CHECKS GOOD. SEE CONTINUATION CARD FOR DETAILS. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

*CORROSION ON LH FLOOR SEAT RAIL BETWEEN APPROX. FS 847.00+48 €“ 985.00 (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED LH FLOOR SEAT RAIL BETWEEN APPROX FS847.00+48 TO FS985.00 REF CRJ900 AMM 53-00-49-400-801-A07

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

*CORROSION ON RH FLOOR SEAT RAIL BETWEEN APPROX. FS 847.00 €“ 847.00+48 (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED FLOOR SEAT RAIL BETWEEN FS785.00 TO FS847.00+48 ON RIGHTHAND SIDE IAW CRJ 900 AMM 53-00-49-400-801 (CONFIG A07) (SEE CONTINUATION FOR FURTHER DETAILS)

Part: INTERCOSTAL — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*INSIDE AVIONICS BAY STR 26R IN BETWEEN FS 349.0 AND 364.0 INTERCOSTAL HAS CORROSION. (C-CHECK) RO 2/1/2021 INSTALLED NEW AVIONICS BAY STR 26R INTERCOSTAL BETWEEN FS 349.0 AND 364.0 REF DWG SH670-32050, REV J ,CRJ900 SRM 51-42-06-001-001-A01, AND CRJ 900 SRM 51-42-21-001-001-A01. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: FLOORBEAM — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

*CORROSION ON TOP SURFACE OF FLOOR BEAM LBL 27 AT FS 1031.00. AREA MARKED. (C-CHECK) RO 2/1/2021 REMOVED DAMAGE SECTION OF FLOOR BEAM LBL-27 AT FS 1031.00 AND INSTALLED NEW REPAIR SECTION REF. CRJ-900 SRM 53-00-41-201-001-A03. COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY. SEE CONTINUATION CARD FOR DETAILS

Part: SUPPORT ANGLE — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

*FS 1047 AFT CARGO GILL LINER SUPPORT ANGLE BELOW CARGO DOOR AFT ROLLER TRACK HAS EVIDENCE OF CORROSION. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED BRACKET, P/N MM670-34112-015. FS1047 AFT CARGO GILL LINER ANGLE BELOW CARGO DOOR AFT ROLLER TRACK. REF. CRJ 900 SRM 51-42-06-001-001-A01, DWG MM670-36024 REVE SHEET 1, COMPLIED WITH 51-900-1002-SKY

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*CORROSION ON STGR 20R BETWEEN FS 469.00 €“ 485.00. MARKED. (C-CHECK) RO 2/1/2021 REPLACED STRG 20R BETWEEN FS 469.00 €“ 485.00. REF CRJ-900-SRM 53-00-03-201-001-A02 ,CRJ-900-SRM 51-42-21-001-001-A01 ,CRJ-900-SRM 51-42-06-001-001-A01 , AND MHIRJ REO 690-53-21-1293 REV -- DATED 2020-12-08. COMPLIED WITH 51-900-1002 SKY AND PRESSURE CHECKS GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*CORROSION ON STGR 19R SPLICE BETWEEN FS 469.00 €“ 485.00. MARKED. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED STGR SPLICE AT STGR 19R BETWEEN FS 469.00 - FS 485.00 REF CRJ900 SRM 51-42-06-001-001-A01, AND DWG SH670-30006 REV NC. COMPLIED WITH SKY-51-900-1002 AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: FRAME — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* INSIDE AVIONICS BAY AT FS 310.0 AT APPROX STR 27 FRAME HAS CORROSION. (C-CHECK) RO 2/1/2021 REPAIRED F.S.310.00 LOWER FRAME BETWEEN STGR23L AND STGR25R IN REF DWG SH670-31630, REV K, 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.LEAK CHECK GOOD AT THIS TIME. ALSO COMPLIED WITH 51-900-1002-SKY.

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*CORROSION ON STGR 19R BETWEEN FS 469.00 €“ 485.00. MARKED. (C-CHECK) RO 2/1/2021 REPLACED STRINGER 19R FROM FS469.00 - FS485.0 REF REO 690-53-21-1293 REV -- DATED 2020-12-08 AND CRJ 900 SRM 53-00-03-201-001-A01. SEE CONTINUATION CARD FOR DETAILS. CHECKS GOOD. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: STRINGER — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

*CORROSION ON STGR 25L, BETWEEN FS 1000.00 €“ 1047.00. AREAS MARKED. (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED STRINGER 25L BETWEEN FS977-FS1098. REF CRJ900 SRM 51-42-06-001-001-A01 AND SRM 51-42-21-001-001-A01. REF CRJ900 SRM 53-00-03-201-001-A01 AND DWG MM670-35007 REV W. PRESSURE CHECKS GOOD AND OPS CHECKS GOOD. AND COMPLIED WITH TASK CARD 51-900-1002-SKY

Part: DOOR SILL — CORRODED (AFT CARGO) · airframe 31,056 hrs · 21,309 cycles

*CORROSION ON AFT CARGO DOOR SILL. AREAS MARKED. (C-CHECK) RO 2/1/2021 REMOVED AND INSTALLED NEW AFT CARGO DOOR SILL. REF CRJ-900 SRM 51-42-06-001-001-A01 , SRM 51-42-21-001-001-A01 AND DWG MM670-35085 REV G. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: FRAME — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* AVIONICS BAY AT FS 295.0 AT APPROX STR 27 THERE IS CORROSION. (C-CHECK) RO 2/1/2021 REPAIRED AVIONICS BAY LOWER FRAME BETWEEN STGR 25R AND STGR 25L REF DWG SH670-31630, REV K, 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. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: INTERCOSTAL — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

* INSIDE AVIONICS BAY INTERCOSTAL HAS CORROSION STR 27R IN BETWEEN FS 333.0 TO FS364.0 (C-CHECK) RO 2/1/2021 INSTALLED NEW AVIONICS BAY INTERCOSTAL AT STR 27R IN BETWEEN FS 333.0 TO FS364 REF DWG SH670-32050 REV J , CRJ-900-SRM 51-42-06-001-001-A01 , CRJ-900-SRM 51-42-21-001-001-A01. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD. SEE CONTINUATION CARD FOR DETAILS

Part: PIN — MIGRATED (CRGO DR SHAFT) · airframe 31,056 hrs · 21,309 cycles

*AFT CARGO DOOR HANDLE SHAFT PIN MIGRATED CAUSING DAMAGE TO SHAFT HOUSING AT 12 O'CLOCK POSITION. (C-CHECK) RO 2/1/2021 INSTALLED CARGO DOOR HANDLE SHAFT HOUSING REF CRJ-900 SRM 51-42-21-001-001-A01 , DWG 600-35027 REV M . COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECKS GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: RIVET — GOUGED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

FS 913/927 - STGR 27 - BUTTON HEAD RIVETS ARE GOUGED (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED 6EA RIVETS WITH NEW ON FS913.00 TO FS927.00 STGR27 PER SRM 51-42-06-001-001-A01. SEE ATTACHED CONTINUATION CARD FOR DETAILS OF WORK PERFORMED. LEAK CHECKS GOOD AT THIS TIME.

Part: SKIN — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

EXTERNAL SKIN - RIVETS CORRODED AS MARKED - FS 897/913 STGR 21R (C-CHECK) RO 2/1/2021 REPAIRED FUSELAGE ESTERNAL SKIN BETWEEN FS 897- FS 913 STR 21R REF REO 690-53-51-265 REV -- DATED 2020-12-22. PRESSURE CHECK GOOD AND SEE CONTINUATION CARD FOR DETAILS

Part: INTERCOSTAL — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

INTERCOSTAL CORRODED AS MARKED - FS 349/364 STGR 20R (C-CHECK) RO 2/1/2021 REMOVED CORRODED INTERCOSTAL, INSTALLED REPLACEMENT INTERCOSTAL AT STR20R BETWEEN FS349.00 TO FS364.00 REF. BOMBARDIER DWG SH670-31950 REV Y, CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01, RESTORED FINISH AND APPLIED CORROSION INHIBITING COMPOUND TO INSTALLED INTERCOSTAL.COMPLIED WITH 51-900-1002-SKY (CL600-2D24).

Part: SKIN — CORRODED (ZONE 100) · airframe 31,056 hrs · 21,309 cycles

EXTERNAL SKIN - RIVETS CORRODED AS MARKED - FS 881/927 - STGR 27 (C-CHECK) RO 2/1/2021 REMOVED & REPLACED FASTENERS FS881/927 STGR27 REF CRJ-900 SRM 51-42-06-001--001-AO1 & COMPLIED WITH THE REO 690-53-51-260 REV -- DATE 2020-12-04.

Part: FITTING — CORRODED (FWD FUSELAGE) · airframe 31,056 hrs · 21,309 cycles

FWD JACK FITTING - L/H JACK FITTING SUPPORT CORRODED AT BOTTOM FLANGE AS MARKED (C-CHECK) RO 2/1/2021 EVALUATED AND FOUND L/H JACK FITTING SUPPORT TO BE OUT OF LIMITS. REF CRJ-900 SRM 53-00-101-001-A01. REMOVED AND INSTALLED NEW FWD NOSE JACK FITTING - L/H JACK FITTING SUPPORT, REF DWG CC670-32050 REV NC, CRJ-900 SRM 51-42-06-001-001-A01 AND SRM 51-42-21-001-001-A01. LEAK CHECK GOOD. COMPLIED WITH SKYWEST TASKCARD 51-900-1002-SKY. SEE CONTINUATION CARD FOR DETAILS.

Part: FRAME — CORRODED (ZONE 200) · airframe 31,056 hrs · 21,309 cycles

FS 280 - CIRCUMFERENTIAL JOINT - CORRODED FROM STGRS 18R/21R AS MARKED (C-CHECK) RO 2/1/2021 REMOVED CORROSION ON FS 280 - CIRCUMFERENTIAL JOINT FROM STGRS 18R/21R REF CRJ-900-SRM 51-21-06-001-001-A01. BLENDED AREA FOUND TO BE WITHIN LIMITS REF CRJ-900-SRM 53-00-00-101-001-A01. PRESSURE CHECKS GOOD / COMPLIED WITH TASK CARD 51-900-1002-SKY / WEIGHT STATEMENT: WEIGHT CHANGE NEGLIGIBLE, BLENDING OF CORROSION ONLY / SEE CONTINUATION CARD FOR ADDITIONAL DETAILS OF WORK PERFORMED

Part: FITTING — CORRODED (FWD FUSELAGE) · airframe 31,056 hrs · 21,309 cycles

FWD JACK FITTING - R/H JACK FITTING SUPPORT CORRODED AT BOTTOM FLANGE AS MARKED (C-CHECK) RO 2/1/2021 CORROSION FOUND ON LOWER ATTACHMENT FLANGE AS WELL AS WEB ELEMENT THEREFORE FOUND OUT OF LIMITS REF CRJ900 SRM 53-00-00-101-001-A01. - INSTALLED NEW FWD JACK FITTING - R/H JACK FITTING SUPPORT IN REF DWG CC670-32050, REV NC, CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01. COMPLIED WITH 51-900-1002-SKY. LEAK CHECKS GOOD AT THIS TIME.

Part: FRAME — CORRODED (FUSELAGE) · airframe 31,056 hrs · 21,309 cycles

FS 280 - CIRCUMFERENTIAL JOINT - CORRODED FROM STGR 22R/25R AS MARKED (C-CHECK) RO 2/1/2021 REMOVED CORROSION FROM FS280 CIRCUMFERENTIAL JOINT BETWEEN STGR 22R-25R PER SRM 51-21-06-001-001-A01. REWORKED AREA WITHIN LIMITS OF SRM 53-00-00-101-001-A01. SEE ATTACHED CONTINUATION CARD FOR DETAILS OF WORK PERFORMED. LEAK CHECK GOOD AT THIS TIME. COMPLIED WITH 51-900-1002-SKY / WEIGHT STATEMENT: WEIGHT CHANGE NEGLIGIBLE, BLENDING OF CORROSION ONLY / COMPLIED WITH TASK CARD 51-900-1002-SKY

Part: ATTACH ANGLE — CORRODED (WNG-BDY FAIRING) · airframe 31,056 hrs · 21,309 cycles

*ATTACH ANGLE FOR FWD WING-TO-FUSELAGE FAIRINGS AT APPROXIMATELY FS629.00 IS CORRODED IN MULTIPLE LOCATIONS (MARKED) (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED ATTACH ANGLE (STRAP) FOR FWD-TO- FUSELAGE FAIRING AT APPROXIMATELY FS 629.00. REF. CRJ900, SRM 51-42-06-001-001-A01, SRM 51-42-15-001-001-A01

Part: SKIN — CHAFED (LT WING TE FLAP) · airframe 31,056 hrs · 21,309 cycles

*L/H INBD FLAP LWR SKIN IS CHAFED WHERE INBD HINGE FAIRING CONTACTS SURFACE. AREA MARKED. (C-CHECK) RO 2/1/2021 BLENDED L\H INBD LWR FLAP SKIN WHERE INB HINGE FAIRING CONTACTS SURFACE REF CRJ900 SRM 51-12-00-001-001-A01. EVALUATED AND FOUND TO BE OUT OF LIMITS. COMPLIED WITH REO 690-57-52-369 REV -- DATED 2020-12-18 ALL STEPS. SEE CONTINUATION CARD FOR DETAILS.

Part: VANE — CHAFED (LT WING TE FLAP) · airframe 31,056 hrs · 21,309 cycles

*L/H INBD FLAP VANE HAS 2EA SMALL CHAFES ON UPPER SURFACE AT CENTER AFT AREA. AREA MARKED. (C-CHECK) RO 2/1/2021 (L/H INBD FLAP VANE 2EA. SMALL CHAFES ON UPPER SURFACE AT CENTER AFT AREA) ORIGINAL MATERIAL THICKNESS BLEND OUT #1 IS .050", REMAINING MATERIAL THICKNESS IS .033", MATERIAL LOSS OF .017". ORIGINAL MATERIAL THICKNESS BLEND OUT #2 IS .050", REMAINING MATERIAL THICKNESS IS .039", MATERIAL LOSS OF .011". BLENDS ARE FOUND TO BE IN LIMITS REF. MHIRJ REO 690-57-52-368 REV. --, DATED 2020-12-16. SEE CONTINUATION CARD FOR WORK DETAILS. COMPLIED WITH SKYWEST FORM M-337 AND SKYWEST TASK CARD 51-900-1002-SKY.

Part: SKIN — CHAFED (RT WING TE FLAP) · airframe 31,056 hrs · 21,309 cycles

*R/H INBD FLAP LWR SKIN IS CHAFED WHERE INBD HINGE FAIRING CONTACTS SURFACE. AREA MARKED. (C-CHECK) RO 2/1/2021 COMPLIED WITH REO 690-57-52-367 REV-- DATE 2020-11-26 STEPS.1-4 (SEE CONTINUATION FOR FURTHER DETAILS)

Part: RETAINER — CORRODED (LT AILERON) · airframe 31,056 hrs · 21,309 cycles

*LH AILERON MOUNT BOLT RETAINERS HAVE 12EA BOLTS CORRODED (C-CHECK) RO 2/1/2021 NEW SERVICEABLE ATTACHMENT HARDWARE FOR LH AILERON MOUNT BOLT RETAINERS (12 BOLTS AND 12 WASHERS) HAS BEEN ORDERED AND RECEIVED ON CAMP#21826832 JOB 91516155 OP 5071 AND THEY ARE ALL INSTALLED ON CAMP#21826689 JOB 91516150 OP 583.

Part: HOUSING — CHAFED (DOOR HANDLE) · airframe 31,056 hrs · 21,309 cycles

*SERVICE DOOR OUTER HANDLE HOUSING CHAFED (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED GALLEY SERVICE DOOR OUTER HANDLE HOUSING WITH NEW GALLEY SERVICE DOOR OUTER HANDLE HOUSING REF CRJ-900 SRM 51-42-21-001-001-A01, CRJ-900 SRM 51-42-06-001-001-A01, DWG CC670-38103 REV -C. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD. SEE CONTINUATION CARD FOR DETAILS

Part: WINDOW — CRAZED (SERVICE DOOR) · airframe 31,056 hrs · 21,309 cycles

*SERVICE DOOR WINDOW CRAZED/SCRATCHED (C-CHECK) RO 2/1/2021 REMOVED AND REPLACED SERVICE DOOR WINDOW REF: CRJ900 AMM. 56-30-01-000-801-A01, AND 56-30-01-400-801-A01. LEAK CHECKED GOOD.

Part: SKIN — CHAFED (LT WING LE) · airframe 31,056 hrs · 21,309 cycles

CHAFFING ON THE LEFT HAND WING LEADING EDGE 531AL. (C-CHECK) RO 2/1/2021 BLENDED AND EVALUATED 3EA CHAFES ON LEFT HAND WING LEADING EDGE 531AL REF CRJ900 SRM 51-12-00-001-001-A01. BLEND LOCATIONS #1 AND #2 FOUND TO BE WITHIN LIMITS. REF CRJ-900 SRM 57-41-01-001-001-A01 AND SRM 57-41-01-101-001-A01. COMPLIED WITH REO 690-57-41-299 REV -- DATED 2020-12-30 FOR LOCATION #3. COMPLIED WITH SKYWEST TASKCARD 51-900-1002-SKY. SEE CONTINUATION CARD FOR DETAILS.

Part: RETAINER — CORRODED (RT AILERON) · airframe 31,056 hrs · 21,309 cycles

*RH AILERON MOUNT BOLT RETAINERS HAVE 12EA BOLTS CORRODED (C-CHECK) RO 2/1/2021 ORDERED AND RECEIVED HARDWARE. SEE CAMP#21826690, JOB# 91516150, OP# 584 FOR INSTALLATION.

Part: SLIDER — GOUGED (THRUST REVERSER) · airframe 31,056 hrs · 21,309 cycles

*RH UPPER TRANSLATING COWL OUTBD SLIDER IS GOUGED AT THE FWD END AREA (MARKED) (C-CHECK) RO 2/1/2021 REPAIRED RH UPPER TRANSCOWL OUTBOARD SLIDER PER REO 690-54-21-365 REV --, DATED 2020-12-16, REO 670-78-34-384 REV -D, DATED 2018-11-27 & REO 670-54-21-1172 REV -A, DATED 2018-11-27. CHECKS GOOD. SEE CONTINUATION CARD FOR DETAILS. COMPLIED WITH TASK CARD 51-900-1002-SKY.

Part: SKIN — CHAFED (RT WING TE FLAP) · airframe 31,056 hrs · 21,309 cycles

CHAFFING ON THE RIGHT HAND WING INBOARD FLAP PANEL 684GB. (C-CHECK) RO 2/1/2021 REPLACED PANEL 684GB P/N CC670-14178-1 DUE TO OUT OF LIMITS CHAFFING IN REF CRJ900 SRM 57-52-01-101-001-A01. ORDERED AND RECEIVED NEW SERVICEABLE PANEL. SEE CONTINUATION CARD FOR WORK PERFORMED.

Part: SUPPORT — UNSECURE (RT NACELLE) · airframe 31,056 hrs · 21,309 cycles

*RH UPPER TRANSLATING COWL FWD LATCH INNER Z CHANNEL SUPPORT NOT SECURED TO INNER SKIN (MARKED) (C-CHECK) RO 2/1/2021 PERFORMED REPAIR AT RH UPPER TRANSLATING COWL FWD LATCH IAW REO 690-54-21-368 REV. -A DATED 01/08/2021 COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY (CL600-2D24) STRUCTURAL MAJOR REPAIR (**RII**)

Part: SKIN — CHAFED (RT WING TE FLAP) · airframe 31,056 hrs · 21,309 cycles

CHAFFING ON THE RIGHT HAND WING INBOARD FLAP PANEL 684EB. (C-CHECK) RO 2/1/2021 REMOVED CHAFFING ON THE RH WING INBD FLAP PANEL 684EB. FOUND REWORKED AREA TO BE OUT OF LIMITS, REMOVED DAMAGED PANEL AND REPLACED WITH NEW PANEL P/N:CC670-14177-2. SEE CONTINUATION CARD FOR DETAILS.

Part: SCREW — BROKEN (THRUST REVERSER) · airframe 31,056 hrs · 21,309 cycles

*RH ENGINE UPPER OUTBD TRANSCOWL LATCH BEAM, NYLON INSERT SECURING SCREWS BROKEN AND SCREW HOLES ARE ELONGATED ON BEAM (MARKED) (C-CHECK) RO 2/1/2021 REPAIRED RH UPPER OUTBOARD TRANSCOWL LATCH BEAM NYLON INSERT ATTACH/SECURING HOLES AND INSTALLED NEW REPLACEMENT NYLON INSERT, PN CN624-1508-209, WITH NEW SCREWS, WASHERS AND NUTS, REFERENCE REO 670-78-30-921 REV-B DATED 2014-07-02 AND CRJ900 AMM 78-33-05-960-801-A02. COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY.

Part: PANEL — CHAFED (RT WING TE FLAP) · airframe 31,056 hrs · 21,309 cycles

CHAFFING ON THE RIGHT HAND WING INBOARD FLAP PANEL 684ET. (C-CHECK) RO 2/1/2021 BLENDED CHAFFED AREA ON PANEL 684ET REF CRJ900 SRM 51-12-00-001-001-A01.FOUND TO BE OUT OF LIMITS. REMOVED DAMAGED PANEL AND REPLACED WITH NEW PANEL P/N:CC670-14027-3 AND BOMBARDIER DWG#CC670-14027 REV. -C SEE CONTINUATION CARD FOR DETAILS.

Part: DRAG ANGLE — CRACKED (VERT TO FUSE) · airframe 31,056 hrs · 21,309 cycles

*LH SIDE OF VERTICAL STAB TO FUSELAGE ATTACH AFT DRAG ANGLE POSSIBLE CRACK (MARKED) (C-CHECK) RO 2/1/2021 REPARIED LH SIDE OF VERTICAL STAB TO FUSELAGE ATTACH AFT DRAG ANGLE IAW CRJ 900 SRM 55-31-00-201-001-A01. COMPLIED WITH 51-900-1002-SKY.

Part: SKIN — DENTED (FUSELAGE) · airframe 31,056 hrs · 21,309 cycles

COMPLY WITH SCHEDULED MAINTENANCE CODE: RA54568-690-53-21-1168 MXCODEID49801-PR - DAMAGE TO FUSELAGE LOWER SKIN PANEL AND UPPER SKIN PANEL. PERFORMED TEMPORARY REPAIR PER REO 690-53-21-1168 REV -- DATED 2019-11-17. PERMANENT REPAIR DUE IN 2000 FLIGHT HOURS. DUE BY TAT 31576.5., PART NUMBER: - , SERIAL NUMBER: 15161, POSITION: (C-CHECK) RO 2/1/2021 REPAIRED FUSELAGE LOWER SKIN PANEL AND UPPER SKIN REF REO 690-53-21-1286 REV -- DATED 2020-12-28. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECKS GOOD . SEE CONTINUATION CARD FOR DETAILS

Part: SKIN — DENTED (LT NR 1 SLAT) · airframe 31,056 hrs · 21,309 cycles

COMPLY WITH SCHEDULED MAINTENANCE CODE: RA53036-690-57-42-673 160PQ MXCODEID48869-PR - TEMPORARY DISPOSITION FOR DENT ON LH #1 SLAT OUTER SKIN BETWEEN SS82.00-SS92.20. COMPLIED WITH TEMPORARY REPAIR PER REO 690-57-42-673. PERMANENT PERAIR DUE WITHIN 2150 FLT HRS WITH ESCALATION PROVIDED BY REO 690-57-42-673 REV A DUE BY TAT 31415., PART NUMBER: - , SERIAL NUMBER: 15161, POSITION: (C-CHECK) RO 2/1/2021 PERMANTLY REPAIRED L/H #1 SLAT DENT REF MHIRJ REO 690-57-42-766 REV -- 2020-12-15

Part: WINDSHIELD — CRACKED (RIGHT) · airframe 30,655 hrs · 20,997 cycles

RIGHT WINDSHIELD CRACKED FLIGHT 3514. REPLACED RIGHT WINDSHIELD IAW AMM.

Part: RIB — DAMAGED (HORIZONTAL STAB) · airframe 30,639 hrs · 20,981 cycles

RIB 14 ON RH HORIZONTAL STAB IS DAMAGED AND OUT OF LIMITS PER SRM. REPLACED RIB 14 ON RH HORIZONTAL STAB PER ETD.

Part: WARNING MESSAGE — ILLUMINATED (RT BRAKE) · airframe 27,414 hrs · 18,700 cycles

RIGHT INBOARD BRAKE OVERHEAT WARNING AFTER TAKEOFF. FOLLOWED QRH. RETURNED TO FIELD. (FLT#3887) CLOSED DEFERRED #2 BRAKE BTMS IAW MEL.

Part: PANEL — CHAFED (RT WING) · airframe 23,415 hrs · 16,014 cycles

CHAFE ON PANEL 684ET. INSTALLED A NEW PANEL IAW SRM.

Part: PANEL — CHAFED (LT WING) · airframe 23,415 hrs · 16,014 cycles

PANEL CHAFED. INSTALLED A NEW 584EB PANEL IAW SRM.

Part: BULKHEAD WEB — NOT REPORTED (BS 280) · airframe 18,778 hrs · 13,109 cycles

LEFT BS 280 LOWER WEB REQUIRES REPLACEMENT. R & R THE BULKHEAD WEB IAW REO.

Part: FLOORBEAM — CRACKED (BS 280) · airframe 18,778 hrs · 13,109 cycles

LT AND RT BS 280 FLOORBEAM CRACKED AND EDGE DAMAGED BEYOND LIMITS. R & R LT AND RT BS 280 FLOORBEAM IAW SRM.

Part: FRAME — NOT REPORTED (BS 310) · airframe 18,778 hrs · 13,109 cycles

FRAME AT BS 310 REQUIRES GREO REPAIR. REPAIRED FRAME AT FS 310.00 IAW REO.

Part: FRAME — NOT REPORTED (BS 349) · airframe 18,778 hrs · 13,109 cycles

FRAME AT BS 349 REQUIRES REPLACEMENT. REMOVED FRAME SECTOR AND ALL ASSOCIATED ANGLES AND GUSSETS AT FS349 FROM STR 23L TO STR 24R IAW SRM AND AMM.

Part: STRINGER — NOT REPORTED (BS 340-364) · airframe 18,778 hrs · 13,109 cycles

STRINGER 26L BETWEEN BS 340 - 364 REQUIRES REPLACEMENT. REMOVED STR 26L BETWEEN FS 340 AND FS 364 IAW SRM AND AMM.

Part: RETAINER — CRACKED (CARGO DOOR) · airframe 16,909 hrs · 11,826 cycles

RAMP REPORTED THE FWD CARGO DOOR WILL NOT OPEN. FOUND THE LOWER FWD AND AFT CORNERS OF THE DOOR DAMAGED AND CRACKED. REPAIRED DAMAGE TO SEAL RETAINER IAW REO.

Part: BATTERY PACK — INOPERATIVE (FLASHLIGHT) · airframe 16,476 hrs · 11,504 cycles

AFT F/A EMERGENCY FLASHLIGHT INOPERATIVE. REPLACED AFT F/A FLASHLIGHT BATTERY IAW AMM.

Part: SKIN — DENTED (RT FUSELAGE) · airframe 16,476 hrs · 11,504 cycles

DENT FOUND ON RIGHT SIDE OF AIRCRAFT AFT OF FWD LAV PORT. INSTALLED DOUBLER REPAIR IAW SRM.

Part: SKIN — DENTED · airframe 16,476 hrs · 11,504 cycles

DENT FOUND ON RIGHT SIDE OF AIRCRAFT AFT OF FWD LAV PORT. INSTALLED DOUBLER REPAIR IAW SRM.

Part: SKIN — CHAFED (FUSELAGE) · airframe 16,287 hrs · 11,384 cycles

SKIN DAMAGE AT LOW-PRESSURE GROUND CONNECTION. PERFORMED REPAIR TO CHAFING ON LP GROUND CONNECTION PLATE BETWEEN BS 1015-1031 IAW REO.

Part: FLASHLIGHT — INOPERATIVE (FWD CABIN) · airframe 16,274 hrs · 11,373 cycles

THE FWD F/A FLASHLIGHT IS INOPERATIVE. REPLACED THE FWD F/A FLASHLIGHT. OPS CHECKED GOOD.

Part: UNKNOWN — ODOR (CABIN) · airframe 16,121 hrs · 11,274 cycles

FUEL ODOR IN CABIN DURING CRUISE. DECLARED EMERGENCY AND LANDED. RAN ENGINES IN DIFFERENT BLEED CONFIGURATIONS. NO LEAKS OR ODORS NOTED. INSPECTED ENGINES AND LEAK CHECKED. NO DEFECTS NOTED.

Part: INDICATOR — FAILED (OIL INDICATOR) · airframe 16,116 hrs · 11,269 cycles

CHIP DETECTOR PANEL WILL NOT TEST AND KEEPS TRIPPING THE CIRCUIT BREAKER. R & R OIL FILLER/TANK LEVEL INDICATOR IAW AMM.

Part: LIGHT — INOPERATIVE (CABIN) · airframe 14,323 hrs · 10,103 cycles

FLOOR LEVEL EMERGENCY LIGHTING LIGHT BULB BURNED OUT. FLT 4790 REPLACED EMERGENCY FLOOD MCD LIGHT BULB IAW AMM.

Part: STRUCTURE — DENTED (FUSELAGE) · airframe 13,989 hrs · 9,906 cycles

ENGINEERING REQUEST EXISTING REPAIR BETWEEN FS 549 & FS 565 AT STRINGER 16 LT TO BE REMOVED & INSPECTED DUE TO FS 581 DENT AT STRINGER 16 LT. C-CHECK REMOVED REPAIR AS ENGINEERING REQUEST IAW REO.

Part: KEELBEAM — CHAFED (FUSELAGE) · airframe 13,989 hrs · 9,906 cycles

KEEL BEAM HAS CHAFING FROM NR 3 HYDRAULIC PUMP LINE. C-CHECK REPAIRED KEEL BEAM CHAFE FROM NR 3 AACMP OUTPUT LINE FLEX HOSE IAW REO.

Part: PISTON — CHAFED (NLG STRUT) · airframe 13,989 hrs · 9,906 cycles

NLG SHOCK STRUT PISTON HAS CHAFE MARK AT LOWER END ON TOP SIDE OF LOWER TORQUE LINK ATTACHMENT LUG. C-CHECK REPAIRED NLG PISTON CHAFE MARKS IAW REO.

Part: LIGHT — MISSING (CABIN) · airframe 13,972 hrs · 9,895 cycles

MOST FORWARD & LT EMERGENCY LIGHT STRIP IS MISSING. FLT#4478 INSTALLED LIGHT STRIP.

Part: FLOORBEAM — CRACKED (FUSELAGE) · airframe 11,705 hrs · 8,325 cycles

LBL 12 FLIGHT DECK FLOORBEAM IS CRACKED AT BACKUP FITTING ATTACH POINT. REPAIRED IAW BOMBARDIER REO 690-53-11-420.

Part: BULKHEAD — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,705 hrs · 8,325 cycles

WHILE REPLACING RIGHT FS 280 FLOORBEAM FOUND BULKHEAD WEB CORRODED. REPAIRED IAW BOMBARDIER REO 670-53-11-594.

Part: ANGLE — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,705 hrs · 8,325 cycles

FS 280 BEAM SPLICE ANGLE CORRODED. REPLACED IAW SRM 51-42-06.

Part: FLOORBEAM — CRACKED (FUSELAGE) · airframe 11,705 hrs · 8,325 cycles

RBL 12 FLIGHT DECK FLOORBEAM IS CRACKED AT BACKUP FITTING ATTACH POINT. REPAIRED IAW BOMBARDIER REO 690-53-11-420.

Part: BEAM — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,705 hrs · 8,325 cycles

FS 280 RIGHT SIDE BEAM CORRODED. REPLACED IAW SRM 51-42-06.

Part: BEAM — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,705 hrs · 8,325 cycles

FS 280 LEFT SIDE BEAM CORRODED. REPLACED IAW SRM 51-42-06/51-42-13.

Part: LIFE VEST — EXPIRED (CABIN) · airframe 11,473 hrs · 8,153 cycles

LIFE VEST EXPIRED. REMOVED AND REPLACEDLIFE VEST IAW AMM 25-61-03.

Part: CONTAINER — TORN (LIFE VEST) · airframe 11,273 hrs · 8,006 cycles

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

Part: COMPUTER — LOOSE (NR 2) · airframe 9,358 hrs · 6,622 cycles

SLATS HALFSPEED (STATUS INFLIGHT) FLAPS HALFSPEED (STATUS INFLIGHT) SPLR/STAB (STATUS INFLIGHT)- HIGHSPEED CLACKER ABOVE 230 KIAS WITH SLATS/FLAPS RETRACTED. MTC ENTRY- FOUND NR 2 SFECU LOOSE IN RACK. RESECURED NR 2 SFECU COMPUTER, CLEAR INHIBITS, RAN FLAP + SLAT 15 TIMES WITH NO DEFECTS NOTED. OPERATIONAL CHECKS GOOD IAW CRJ-900 AMM 27-51-05. OK FOR SERVICE.

Part: SEAL — MISINSTALLED (CARGO DOOR) · airframe 9,358 hrs · 6,622 cycles

DURING STEADY CLIMB AT 320 KTS, CABIN ALTITUDE CLIMBED THROUGH 8,500 FT AT FL 180 & CONTINUED TO A MAXIMUM OF 10,000 FT. CREW OXYGEN MASK DONNED AND A DESCENT TO 10,000 FT INITIATED. PRESSURIZATION SYSTEM FAILED. MAX PRESSURE DIFFERENCE 3.5 PSI. R & R NR 2 SAFETY VALVE IAW AMM 21-32-03. OPS CHECKED GOOD ON GROUND. NO DEFECTS NOTED IAW AML 813044 ITEM NR 1. ON DIAGNOSTIC CHECK FLIGHT, CREW REPORTED FCF UNSATISFACTORY. FOUND AFT CARGO DOOR SEAL INSTALLED BACKWARD. REMOVED, INSPECTED AND RE-INSTALLED SEAL IAW AMM 52-31-07. OPS CHECKED GOOD. OK FOR SERVICE. CHECK FLT SATISFACTORY. FOUND LT SAFETY VALVE OBSTRUCTED WITH INSULATION. REMOVED INSULATION FROM SAFETY VALVE AND RESECURRED INSULATION BLANKET IAW AMM 25-80-00.

Part: DOOR — DAMAGED (NLG) · airframe 7,285 hrs · 5,285 cycles

MULTIPLE LIGHTNING / STATIC DISCHARGES WERE FOUND ON THE LEFT SIDE OF THE FORWARD FUSELAGE. THREE DISCHARGES WERE ON THE FORWARD EQUIPMENT ACCESS PANEL (PANEL NO. 211AL) AND TWO ON THE NOSE LANDING GEAR DOOR. REPAIR IAW STS ENGINEERING EA 5-2010-333 AND CRJ-200 SRM CHAPTER 51-21-16.