N438YX

Part: BATTERY PACK — FAILED (EMERGENCY LIGHTS) · airframe 17,035 hrs · 11,509 cycles

WHILE IN HEAVY CHECK: WHEN EMERGENCY LIGHT TEST BUTTON IS PRESSED ON FWD OR AFT FAP THE FOLLOWING LIGHTS DO NOT ILLUMINATE: AFT RH PASSAGEWAY SIGN, AFT RH EXIT MARKING SIGN, AFT RH EXIT IDENTIFIER SIGN, CABIN EMERGENCY-LIGHT ABOVE SEAT ROW 12 AND 20, BUT WILL ILLUMINATE WHEN EMERGENCY LIGHTS ARE SWITCHED ON FROM COCKPIT, OR EITHER FAP. : REMOVED PAX CABIN CEILING PANEL 254CRC, REMOVED EMERGENCY-LIGHT POWER- UNIT BATTERY #4, P/N: 3400-22-10, S/N: 002601, AND REPLACED WITH P/N: 3400-22-10, S/N 001500. REINSTALLED PAX CEILING PANEL 254CRC. PERFORMED OPS CHECK, OPS CHECK GOOD. REF AMM 33-50-01, 25-22-07, AND 33-50-00

Part: FUSE — BLOWN (ELPU) · airframe 14,576 hrs · 9,899 cycles

TWO EMERGENCY LIGHTS NOT WORKING, ROW 1 AND 8. R&R FUSES 2 AND 4 IN ELPU 2.

Part: BATTERY PACK — DISCHARGED (EMERGENCY LIGHTS) · airframe 14,529 hrs · 9,874 cycles

EMERGENCY LIGHT BATTERY DISPLAYED AFTER CHARGING EMERGENCY LIGHT POWER UNIT IAW AMM. R & R THE NR 3 EMERGENCY LIGHT BATTERY IAW AMM 33-50-01, OPS CHECKED GOOD.

Part: LIGHT — INOPERATIVE (CABIN) · airframe 13,007 hrs · 8,911 cycles

LUMINOUS FLOOR STRIP RIGHT SIDE ROW 1 NOT ILLUMINATING. R&R PHOTOLUMINESCENT STRIP NEAR L1 DOOR IAW AMM 33-50-21.

Part: STRINGER — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,305 hrs · 7,755 cycles

*** WHILE AIRCRAFT WAS IN HEAVY CHECK *** MAINTENANCE REPORTED LEVEL 2 CORROSION ON CENTER FUSELAGE III UNDER FLOOR AT STR 21L BETWEEN FR 88-89. MAINTENANCE (REPAIRED) REMOVED AND REPLACED STR 21L BETWEEN FR 88-89 IAW ETD2019-170-032802 AND SRM 53-23-03. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: BEAM — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,305 hrs · 7,755 cycles

WHILE AC WAS IN FOR HEAVY CHECK FOUND PASSENGER CABIN CENTER FUSELAGE 3 FLOOR STRUCTURE CORROSION FOUND AT LONGITUDINAL BEAM BTW FR 86-89LBL 12" AREA. AAR MX REPLACED CABIN CENTER FUSELAGE 3 FLOORBEAM PN 170-65669-003 IAW SRM 51-41-01, 51-42-03 PSE:53-23-005. AC REMAINS IN YRQ FOR COMPLETION.

Part: PANEL SUPPORT — CRACKED (FUSELAGE) · airframe 11,305 hrs · 7,755 cycles

WHILE AC WAS IN FOR HEAVY CHECK FOUND PAX CABIN CENTER FUSELAGE 3 FLOOR STRUCTURE CRACK FOUND AT PANEL SUPPORT PN 170-66796-001 FR 86 LBL 24". MX REPLACED PANEL SUPPORT AT FR 86 LBL 24"

Part: BEAM — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,305 hrs · 7,755 cycles

***WHILE A/C WAS OUT OF SERVICE FOR HEAVY CHECK*** PASSENGER CABIN CF III FLOOR STRUCTURE, CORROSION FOUND AT LONGITUDINAL BEAM AREA BTW FR86-89 RBL 12". PASSENGER CABIN CF III FLOOR STRUCTURE, LONGITUDINAL BEAM REPLACED BTW FR86-89 RBL 12" IAW SRM 51-43-03 & 51-41-01. A/C REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: SEAT TRACK — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,305 hrs · 7,755 cycles

WHILE AC WAS IN FOR HEAVY CK FOUND PAX CABIN FWD FUSE 2 FLOOR STRUCTURE CORROSION FOUND AT CROWN SECTION OF SEAT TRACK FRAME 17 RBL 12" AREA. MX REPLACED CROWN SECTION OF SEAT TRACK PN 170-03263-001 FRAME 17 RBL 12". IAW SRM 51-43-03/04. AC REMAINS IN YRQ FOR COMPLETION.

Part: SPLICE PLATE — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,305 hrs · 7,755 cycles

***WHILE A/C WAS OUT OF SERVICE FOR HEAVY CHECK*** PASSENGER CABIN CF III FLOOR STRUCTURE, CORROSION FOUND AT SPLICE PLATE AREA OF FRAME 89 RBL 12". PASSENGER CABIN CF III FLOOR STRUCTURE, SPLICE PLATE AREA OF FR 89 RBL 12" REPLACED IAW SRM 51-43-03. A/C REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: SHEAR PANEL — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,305 hrs · 7,755 cycles

***WHILE A/C WAS OUT OF SERVICE FOR HEAVY CHECK*** PASSENGER CABIN CF III FLOOR STRUCTURE, CORROSION FOUND AT MIDDLE SHEAR PNL AND GALLEY SUPPORT BTW FR 87-88 AND BTW RBL 12"-LBL 12". PASSENGER CABIN CF III FLOOR STRUCTURE, MIDDLE SHEAR PANEL AND GALLEY SUPPORT BTW FR 87-88 AND BTW RBL 12"-LBL 12" REPLACED IAW SRM 51-43-03 AND 51-42-03. A/C REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: PANEL SUPPORT — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,305 hrs · 7,755 cycles

***WHILE A/C WAS OUT OF SERVICE FOR HEAVY CHECK*** PASSENGER CABIN CF III FLOOR STRUCTURE, CORROSION FOUND AT PNL SUPPORT AREA BTW FR88-89 RBL36". PASSENGER CABIN CF III FLOOR STRUCTURE, PNL SUPPORT REPLACED AT AREA BWT FR88-89 RBL36" IAW SRM 51-43-03 & 51-42-03. A/C REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: SHEAR PANEL — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,305 hrs · 7,755 cycles

***WHILE A/C WAS OUT OF SERVICE FOR HEAVY CHECK*** PASSENGER CABIN CF III FLOOR STRUCTURE, CORROSION FOUND AT RT SHEAR PNL AND GALLEY SUPPORTS BTW FR88-87 RBL12"-36". PASSENGER CABIN CF III FLOOR STRUCTURE, RT SHEAR PNL AND GALLEY SUPPORT REPLACED BWT FR88-87 RBL12"-36" IAW SRM 51-43-03 & 51-42-03 & 51-42-01. A/C REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: FITTING — CRACKED (FUSELAGE) · airframe 11,305 hrs · 7,755 cycles

*** WHILE AIRCRAFT WAS IN FOR HEAVY CHECK *** MAINTENANCE REPORTED A CRACK FOUND ON ANGLE CLIP AT FR12, BL-0, (BELOW COCKPIT FLOOR STRUCTURE AREA). MAINTENANCE REMOVED AND REPLACED THE ANGLE CLIP AT FR12, BL-0 IAW SRM 51-41-02. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: PANEL SUPPORT — CRACKED (FUSELAGE) · airframe 11,305 hrs · 7,755 cycles

WHILE AC WAS IN FOR HEAVY CHECK FOUND PASSENGER CABIN CENTER FUSELAGE 3 FLOOR STRUCTURE CRACK FOUND AT PANEL SUPPORT FR 86 RBL 24" AREA. MX REPLACED PANEL SUPPORT PN 170-66796-001 IAW

Part: GUSSET — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,305 hrs · 7,755 cycles

***WHILE A/C WAS OUT OF SERVICE FOR HEAVY CHECK*** PASSENGER CABIN REAR FUSELAGE PRESSURIZED FLOOR STRUCTURE, CORROSION FOUND AT GUSSET PLATE AREA OF FRAME 90 RBL 24". REMOVED AND REPLACED GUSSET PLATE IAW SRM 51-41-02. A/C REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: PLATE — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,305 hrs · 7,755 cycles

WHILE AC WAS IN FOR HVY CK FOUND CORROSION LOCATED ON FWD CARGO DOOR LOWER SILL CLOSING PLATE. MX REPLACED FWD CARGO DOOR LOWER SILL CLOSING PLATE PN 170-67451-001. IAW AMM 20-10-01. AC REMAINS IN YRQ FOR COMPLETION.

Part: SKIN — DENTED (FUSELAGE) · airframe 11,305 hrs · 7,755 cycles

*** WHILE AIRCRAFT WAS IN FOR HEAVY CHECK *** MAINTENANCE REPORTED DENT/DAMAGE AT FR23 + 12" BELOW STRINGER 26L. MAINTENANCE PERFORMED A MAJOR REPAIR AT FR23 + 12" BELOW STRINGER 26L. IAW SRM 53-21-01 & 51-41-02. REFENCE MATERIAL USED 2024T3 .040 ON PO# J60747 AND 2024T3 .063 ON PO# J-2609. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: WINGLET — CRACKED (LT WING) · airframe 11,306 hrs · 7,755 cycles

MAINTENANCE REPORTED A CRACK ON THE LH WING TIP FORWARD SPAR ATTACHMENT. MAINTENANCE REMOVED AND REPLACED THE LH WING TIP IAW EMB AMM 57-30-00.

Part: WINGLET — CRACKED (RT WING) · airframe 11,305 hrs · 7,755 cycles

*** WHILE AIRCRAFT WAS IN FOR HEAVY CHECK *** MAINTENANCE REPORTED A CRACK ON THE RT WING TIP FORWARD SPAR ATTACHMENT. MAINTENANCE REMOVED AND REPLACED THE RT WING TIP IAW AMM 57-30-00. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: BATTERY — DISCHARGED (CABIN) · airframe 9,504 hrs · 6,559 cycles

2 OVERHEAD EMERGENCY LIGHTS OUT IN CABIN. R&R EMERGENCY BATTERY FWD LT SIDE IAW AMM 33-50-01.

Part: PROFILE — CORRODED · corrosion level 2 · airframe 7,179 hrs · 5,043 cycles

BLENDED 3 "L" ANGLES ON PANEL 144FR FOUND TWO TO BE NOM. 0.048" MAXIMUM MATERIAL REMOVED 0.002" WITHIN ALLOWABLE LIMITS REF. SRM 51-75-16. ONE TO BE NOM 0.050" REM. 0.017" OUT OF LIMITS. ALODINED, PRIMED, AND TOP COATED REF. SRM 51-23-04, 51-23-05, 51-23-060.050" PN- 170-08696-001, 170-10064-002, 170-10065-001. SEE EAMS W/O H5829 SEQ 1534 SN 96 FOR WORK DETAILS. AIRCRAFT REMAINS IN HEAVY CHECK BNA

Part: POWER UNIT — INOPERATIVE (ZONE 100) · airframe 7,083 hrs · 4,973 cycles

COCKPIT EMERGENCY LIGHT INOP. R&R EMERGENCY LIGHT POWER UNIT NR 1 IAW AMM 33-50-01. OPS CHECK GOOD.

Part: ASSIST ASSY — LEAKING (L2 DOOR) · airframe 6,463 hrs · 4,774 cycles

L2 DOOR FAILED 24 & 48 HOUR PRESSURE CHECK. R & R THE L2 DOOR PNEUMATIC ASSY IAW AMM 52-12-51. SERVICED TO 2300 PSI.

Part: LATCH — DIRTY (L2 DOOR) · airframe 6,501 hrs · 4,610 cycles

L2 DOOR DOES NOT LATCH OPEN. CLEANED AND LUBED AS REQUIRED, OPS CHECK IAW AMM 52-12-52. CHECKS GOOD.

Part: SWITCH — DIRTY (PAX DOOR) · airframe 6,265 hrs · 4,462 cycles

DOOR PAX AFT OPEN MESSAGE IN FLIGHT. NORMAL PRESSURE INDICATIONS AND CABIN CREW REPORTED DOOR L2 AFT LEFT APPEARED NORMAL. CLEANED DOOR MICROSWITCH IAW AMM 52-72-21. OPS CHECK GOOD.

Part: WIRE HARNESS — DAMAGED (L2 DOOR) · airframe 6,121 hrs · 4,373 cycles

AFT PAX DOOR OPEN EICAS MESSAGE AT FL310, PRESSURIZATION NORMAL. R & R L2 DOOR WIRE HARNESS IAW AMM 52-72-21.

Part: SENSOR — DIRTY (PAX DOOR) · airframe 6,112 hrs · 4,366 cycles

DOOR PAX AFT OPEN EICAS MESSAGE IN FLIGHT, 2 DOOR INDICATORS SHOWING GREEN, 1 NOT. PRESSURIZATION NORMAL. CLEANED L2 DOOR SENSOR IAW AMM 52-72-21. OPS CHECK DOOR CLOSED WARNING ON MFD CMM 52-42-22, OPS CHECK GOOD.

Part: WARNING MESSAGE — FALSE ACTIVATION (AFT PAX DOOR) · airframe 6,112 hrs · 4,366 cycles

AFT PAX DOOR OPEN DISPLAYED EICAS MESSAGE IN FLIGHT. TWO DOOR INDICATORS SHOWING GREEN, ONE NOT. PRESSURIZATION NORMAL.

Part: PROXIMITY SWITCH — FAILED (L2 DOOR) · airframe 6,057 hrs · 4,326 cycles

AFT PAX DOOR OPEN MESSAGE ON EICAS. R&R L2 DOOR INDICATION PROXIMITY SWITCH IAW AMM 52-74-21. OPS CHECKED GOOD.

Part: SENSOR — DEFECTIVE (L2 DOOR) · airframe 6,035 hrs · 4,312 cycles

L2 DOOR OPEN EICAS MESSAGE. R & R THE L2 DOOR CLOSED SENSOR, OPS CHECKED GOOD IAW AMM 52-72-21.

Part: LIGHT — INOPERATIVE (CABIN) · airframe 5,043 hrs · 3,636 cycles

CREW REPORTED THAT THE FLIGHT DECK EMERGENCY LIGHT DID NOT ILLUMINATE WHEN SWITCH WAS TURNED ON. MAINTENANCE REMOVED AND REPLACED COCKPIT OVERHEAD EMERGENCY LIGHT IAW AMM AND OPS CHECKED GOOD.

Part: FLASHLIGHT — INOPERATIVE (COCKPIT) · airframe 4,496 hrs · 3,252 cycles

CREW REPORTED THAT THE F/O FLASHLIGHT WAS NOT INDICATING CHARGING. MAINTENANCE R & R FLASHLIGHT IAW AMM AND OPS CHECKED GOOD.

Part: PROXIMITY SENSOR — INOPERATIVE (L2 DOOR) · airframe 4,406 hrs · 3,185 cycles

CREW REPORTED THAT THE L2 DOOR LATCH INDICATION WAS NOT FULLY SHOWING IN THE WINDOW AND THE L2 DOOR INDICATION ON THE MFD WAS NOT SHOWING GREEN. MAINTENANCE INSPECTED AND FOUND THE DOOR LATCH INDICATOR WORKING NORMALLY BUT THE MFD INDICATION WAS STILL NOT SHOWING GREEN WHEN CLOSED. MAINTENANCE R & R PSEM 2 IAW AMM AND OPS CHECKED GOOD.

Part: STRUCTURE — DENTED (L1 DOOR) · airframe 3,625 hrs · 2,612 cycles

DURING MAINTENANCE FINAL REPAIR OF DENT ON L1 DOOR NEEDS FINAL REPAIR. MX INSTALLED FINAL REPAIR IAW ETD 2016-170-037178, REV B.

Part: LIGHT — INOPERATIVE (CABIN) · airframe 3,638 hrs · 2,622 cycles

CREW REPORTED THAT THE EMERGENCY LIGHT STRIP ON THE LT SIDE WAS INOPERATIVE. MAINTENANCE R & R EMERGENCY LIGHT STRIP IAW AMM AND OPS CHECKED GOOD.

Part: SENSOR — OUT OF ADJUST (PAX DOOR) · airframe 3,560 hrs · 2,569 cycles

CREW RECEIVED AN AFT PASSENGER DOOR OPEN MESSAGE. AN EMERGENCY WAS NOT DECLARED AND CREW LANDED WITHOUT INCIDENT. MAINTENANCE ADJUSTED L2 DOOR LATCH SENSOR IAW AMM AND OPS CHECKED GOOD.

Part: BATTERY PACK — INOPERATIVE (EMERGENCY LIGHT) · airframe 2,183 hrs · 1,572 cycles

CREW REPORTED THAT THE AFT CABIN OVERHEAD EMERGENCY LIGHT WAS INOPERATIVE. MAINTENANCE R & R THE BATTERY PACK IAW AMM AND OPS CHECKED GOOD.

Part: BATTERY PACK — INOPERATIVE (EMERGENCY LIGHTS) · airframe 1,252 hrs · 893 cycles

MAINTENANCE REPORTED AN EMERGENCY BATTERY FAULT LIGHT ADVISORY MESSAGE. MAINTENANCE R & R EMERGENCY LIGHT BATTERY IAW AMM AND OPS CHECKED GOOD. ACFT IS GOOD FOR SERVICE.

Part: ACM — MALFUNCTIONED (NR 2) · airframe 1,139 hrs · 808 cycles

F/A REPORTED A SWEET BURNING ODOR. CREW RAN QRH, DONNED OXYGEN MASKS AND DECLARED AN EMERGENCY. CREW CONTINUED, WHERE THEY LANDED AND TAXIED TO GATE WITHOUT INCIDENT. MAINTENANCE INSPECTED AND FOUND THE NR 2 PACK RUNNING ONLY HOT. MAINTENANCE CLEANED WATER SPRAY NOZZLES IAW AMM AND OPS CHECKED GOOD. ACFT IS GOOD FOR SERVICE.