N421YX

Part: PRESSURE SWITCH — FAILED (BRAKE SYSTEM) · airframe 24,916 hrs · 17,063 cycles

PARKING BRAKE NOT RELEASED CAUTION MESSAGE ON EICAS IN FLIGHT. DECLARED EMERGENCY, LANDED WITHOUT INCIDENT. R&R EMERGENCY PARKING BRAKE PRESSURE SWITCH.

Part: WEB — CORRODED (ZONE 200) · corrosion level 2 · airframe 23,349 hrs · 15,938 cycles

FWD FUSELAGE L/H FLOOR WEB BTWN FR 13-16 CORRODED. R&R IAW SRM 51-41-02.

Part: SEAT TRACK — CORRODED (ZONE 200) · corrosion level 2 · airframe 23,349 hrs · 15,938 cycles

FWD FUDELAGE R/H I/B SEAT TRACK AT FR 17 CORRODED. R&R SEAT TRACK BTWN FR 12-20 IAW SRM 51-41-02, 51-43-03, 51-43-04.

Part: STIFFENER — CORRODED (ZONE 100) · corrosion level 2 · airframe 23,349 hrs · 15,586 cycles

AFT DRAIN MAST, FWD STIFFENER ANGLE AT FR 86-87 CORRODED. R&R IAW SRM 51-41-01, 51-43-03, 51-41-02.

Part: SEAT TRACK — CORRODED (ZONE 200) · corrosion level 2 · airframe 23,349 hrs · 15,938 cycles

R/H AFT I/B SEAT TRACK DOUBLER AT FR 85-89 CORRODED. R&R IAW SRM 51-41-01, 51-43-01.

Part: SHEAR PLATE — CORRODED (ZONE 200) · corrosion level 2 · airframe 23,349 hrs · 15,938 cycles

SHEAR CLIP AT FR 84, BTWN STR 27R-28R CORRODED. R&R IAW SRM 51-41-00, 51-41-01, 51-41-02.

Part: FLOOR SUPPORT — CORRODED (ZONE 200) · corrosion level 2 · airframe 23,349 hrs · 15,938 cycles

R/H O/B FLOOR SUPPORT AT FR 88-90 CORRODED. R&R IAW SRM 51-42-01, 51-43-03.

Part: ATTACH BRACKET — CORRODED (ZONE 800) · corrosion level 2 · airframe 23,349 hrs · 15,938 cycles

L1 DOOR ARM/DISARM CABLE LOWER ATTACH HARDWARE CORRODED. R&R IAW AMM 52-11-40-400-801-A.

Part: RETAINER — CORRODED (ZONE 100) · corrosion level 2 · airframe 23,349 hrs · 15,938 cycles

AFT CARGO FWD LOWER SEAL RETAINER CORRODED. R&R IAW AMM 20-10-01 AND 53-21-29.

Part: SEAL DEPRESSOR — CORRODED (ZONE 100) · corrosion level 2 · airframe 23,349 hrs · 15,938 cycles

AFT CARGO AFT LOWER SEAL DEPRESSOR CORRODED. R&R IAW AMM 20-10-01 AND 53-21-29.

Part: SHEAR ANGLE — BUCKLED (ZONE 200) · airframe 22,849 hrs · 15,569 cycles

BIRD STRIKE ON LH FWD FUSELAGE AT FRA 4 BETWEEM STR 13L TO 17L. ON FURTHER INSPECTION FOUND SHEAR CLIP BUCKLED. REPAIRED IAW ETD2023-170-009221-2023. ALSO REF VP-015533-2023 N/R #1 FOR WORK PERFORMED.

Part: STOP FITTING — CORRODED (ZONE 800) · corrosion level 2 · airframe 23,349 hrs · 15,938 cycles

R1 DOORSTOP HARDWARE CORRODED. R&R IAW AMM 52-41-23-000-802-A

Part: STOP FITTING — CORRODED (ZONE 800) · corrosion level 2 · airframe 23,349 hrs · 15,938 cycles

L1 DOOR STOP HARDWARE CORRODED. R&R IAW AMM 52-11-23-400-802-A

Part: DOOR — OUT OF ADJUST (L1) · airframe 17,694 hrs · 11,930 cycles

L1 DOOR TOUGH TO OPEN FROM OUTSIDE. ADJUSTED L1 DOOR FWD TOP TRACK IAW AMM 52-11-00.

Part: CROSSBEAM — CORRODED (ZONE 100) · airframe 17,575 hrs · 11,861 cycles

DURING HEAVY MAINT CHECK FOUND FR 84 CROSSBEAM CORROSION ON OUTBOARD LT SEAT TRACK. CUT OUT DAMAGE AND FABRICATED L ANGLE AT FR 84 LT OUTBOARD SEAT TRACK PER ETD2020-170-036784.

Part: SPAR — CRACKED (LT WING) · airframe 17,575 hrs · 11,861 cycles

DURING HEAVY MAINT CHECK FOUND LT WING SPAR 1 CRACKED. REMOVED AND REPLACED LT WING SPAR 1 AT WINGTIP ATTACHMENT, IAW EMB SRM 51-40-08, 51-23-06.

Part: SPAR — CRACKED (RT WING) · airframe 17,575 hrs · 11,861 cycles

DURING HEAVY MAINT CHECK FOUND RT WING SPAR 1 CRACKED. REMOVED AND REPLACED RT WING SPAR 1 AT WINGTIP ATTACHMENT, IAW EMB SRM 51-40-08, 51-23-06.

Part: SLIDE — LOOSE (PAX DOOR)

FOUND FWD PASSENGER DOOR EVACUATION SLIDE TO BE PARTIALLY DEPLOYED AT EAMS. REMOVED AND REPLACED DOOR SLIDE. AIRCRAFT IN HEAVY CHECK IN BNA, REF EAMS WO H7734 SN 302 FOR WORK PERFORMED.

Part: POWER SUPPLY — INOPERATIVE (EMERGENCY LIGHTS) · airframe 16,721 hrs · 11,260 cycles

EMERGENCY LIGHTS OVER SERVICE DOOR AND COCKPIT DO NOT ILLUMINATE. R&R EMERGENCY LIGHT POWER UNIT ABOVE FWD SERVICE DOOR.

Part: POWER SUPPLY — INOPERATIVE (EMERGENCY LIGHTS) · airframe 16,721 hrs · 11,260 cycles

EMERGENCY EXIT LIGHTS IN AFT GALLEY AREA DO NOT ILLUMINATE. R&R EMERGENCY LIGHT POWER UNIT ABOVE AFT SERVICE DOOR.

Part: LIGHT — DAMAGED (CABIN) · airframe 16,147 hrs · 10,879 cycles

PHOTOLUMINESCENT LIGHT STRIP NEXT TO COAT CLOSET HAS GREATER THAN 10 DAMAGE. R&R PHOTOLUMINESCENT STRIP LIGHT NEXT TO CART CLOSET IAW AMM 33-50-21.

Part: SLIDE — PARTIAL DEPLOY (L1 DOOR) · airframe 16,122 hrs · 10,868 cycles

L1 DOOR SLIDE DEPLOYED. R&R EMERGENCY EVACUATION SLIDE ON L1 DOOR IAW AMM 25-65-01.

Part: ATTACH ANGLE — CRACKED (ZONE 100) · airframe 11,713 hrs · 7,960 cycles

WHILE A/C WAS IN FOR HEAVY MAINTENANCE VISIT, MAINTENANCE FOUND LT RIB 52 ATTACH ANGLE CRACKED JUST INBOARD OF AILERON TORQUE TUBE SUPPORT FITTING. REMOVED, FABRICATED, LOCATED, DRILLED, AND INSTALLED NEW ANGLE AT FRAME 52 LT RIB IAW ARM 51-40-02, 51-40-03, AND 51-43-03.

Part: STRIKER — GOUGED (ZONE 800) · airframe 11,713 hrs · 7,960 cycles

WHILE A/C WAS IN FOR HEAVY MAINTENANCE VISIT, MAINTENANCE FOUND FLIGHT DECK DOOR, FWD SIDE, EMERGENCY LOCK, ANGLE ON LOCK HOUSING GOUGED. BLENDED DAMAGE AND FOUND TO BE BEYOND ALLOWABLE LIMITS PER SRM 51-75-16. REMOVED AND REPLACED STRIKER IAW SRM 51-10-03, 51-75-16, AND AMM 20-10-01.

Part: SKIN PANEL — CORRODED (PYLON) · corrosion level 2 · airframe 11,713 hrs · 7,960 cycles

WHILE AIRCRAFT WAS IN FOR HEAVY MAINTENANCE, MAINTENANCE FOUND PANEL 419NR HAS CORROSION ON HINGE. MAINTENANCE REMOVED AND REPLACED PANEL 419NR PER AMM 54-50-22.

Part: GUSSET — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,713 hrs · 7,960 cycles

WHILE AIRCRAFT WAS OUT OF SERVICE FOR HEAVY CHECK, MAINTENANCE FOUND LEVEL 2 CORROSION AT AFT WET AREA, SPLICE/GUSSET PLATE FR 90, RBL 10. GUSSET/SPLICE PLATE WAS REMOVED AND REPLACED IAW SRM 51-41-02. AIRCRAFT REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: UPPER SHEET — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,713 hrs · 7,960 cycles

WHILE AIRCRAFT WAS OUT OF SERVICE FOR HEAVY CHECK, MAINTENANCE FOUND LEVEL 2 CORROSION AT AFT WET AREA, RT INBOARD FLOOR BEAM DOUBLER/UPPER SHEET FR 84 TO FR 86, RBL 12. UPPER SHEET WAS REMOVED AND REPLACED IAW SRM 51-41-01 AND 51-43-03. AIRCRAFT REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: SHEAR PANEL — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,713 hrs · 7,960 cycles

WHILE AIRCRAFT WAS OUT OF SERVICE FOR HEAVY CHECK, MAINTENANCE FOUND LEVEL 2 CORROSION AT AFT WET AREA CENTER SHEAR PANEL FR 87 TO FR 88. SHEAR PANEL WAS REPLACED IAW SRM 51-42-01. AIRCRAFT REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: FLOOR SUPPORT — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,713 hrs · 7,960 cycles

WHILE AIRCRAFT WAS IN FOR HEAVY MAINTENANCE VISIT, MAINTENANCE FOUND AFT WET AREA, RT FLOOR PANEL SUPPORT FR 88-90 CORRODED BEYOND ALLOWABLE LIMITS. REMOVED AND REPLACED RT OUTBOARD FLOOR SUPPORT IAW SRM 51-42-01 AND 51-40-02.

Part: SHEAR PANEL — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,713 hrs · 7,960 cycles

WHILE AIRCRAFT WAS OUT OF SERVICE FOR HEAVY CHECK, MAINTENANCE FOUND LEVEL 2 CORROSION AT AFT WET AREA, LT SHEAR PANEL FR 87 TO FR 88. SHEAR PANEL WAS REMOVED AND REPLACED IAW SRM 51-42-01. AIRCRAFT REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: INTERCOSTAL — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,713 hrs · 7,960 cycles

WHILE AIRCRAFT WAS OUT OF SERVICE FOR HEAVY CHECK, MAINTENANCE FOUND LEVEL 2 CORROSION AT AFT WET AREA, RT INBOARD FLOOR BEAM FR 89 TO FR 90. RT INBOARD INTERCOSTAL/FLOORBEAM WAS REMOVED AND REPLACED IAW SRM 51-41-01 AND 51-43-03. AIRCRAFT REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: SHEAR PANEL — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,713 hrs · 7,960 cycles

WHILE AIRCRAFT WAS OUT OF SERVICE FOR HEAVY CHECK, LEVEL 2 CORROSION WAS FOUND AT AFT WET AREA RT SHEAR PANEL. SHEAR PANEL WAS REMOVED AND REPLACED IAW SRM 51-42-01. AIRCRAFT REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: DOOR SILL — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,713 hrs · 7,960 cycles

WHILE AIRCRAFT WAS OUT OF SERVICE FOR HEAVY CHECK, LEVEL 2 CORROSION WAS FOUND ON PAX FLOOR STRUCTURE (WEB/SILL) AT FRAME 14 RBL 49. WEB/SILL WAS REMOVED AND REPLACED IAW SRM 51-43-02. AIRCRAFT REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: DOUBLER — CORRODED (FUSELAGE) · corrosion level 2 · airframe 11,713 hrs · 7,960 cycles

WHILE AIRCRAFT WAS IN FOR HEAVY MAINTENANCE VISIT, MAINTENENCE FOUND CORROSION ON PAX FLOOR STRUCTURE AT FR 16 LBL 13-14. BLENDED AND FOUND TO BE OUT OF LIMITS PER SRM 51-10-03 AMD 53-10-10. REMOVED AND REPLACED DOUBLER IAW SRM 51-42-02, AND 51-40-03.

Part: LIGHT — CRACKED (CABIN) · airframe 11,713 hrs · 7,960 cycles

WHILE AIRCRAFT WAS OUT OF SERVICE FOR HEAVY CHECK, R2 FWD LOWER EMERGENCY EXIT LIGHT WAS FOUND DAMAGED (CRACKED). LIGHT ASSY WAS REMOVED AND REPLACED IAW AMM 33-50-15. AIRCRAFT REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

Part: HOOK — DIRTY (L2 DOOR) · airframe 10,988 hrs · 7,513 cycles

L2 DOOR WAS SLOWLY DISARMING ITSELF DURING FLIGHT. NO INDICATIONS IN EICAS. FOUND DEBRIS IN FLOOR HOOK. REMOVED. OPS CHECK OK.

Part: FLASHLIGHT — CRACKED (CABIN) · airframe 6,771 hrs · 4,747 cycles

MAINTENANCE REPORTED THAT THE AFT GALLEY FLASHLIGHT WAS CRACKED. MAINTENANCE REMOVED AND REPLACED AFT GALLEY FLASHLIGHT PER EMB AMM AND OPS CHECKED GOOD.

Part: LIGHT — LOOSE (CABIN) · airframe 5,479 hrs · 3,863 cycles

CREW REPORTED THAT THE EMERGENCY LIGHT STRIP ON THE LT SIDE OF FIRST CLASS SECTION WAS DISPLACED. MAINTENANCE REPOSITIONED THE LIGHT STRIP IAW AMM AND OPS CHECKED GOOD.