What was found
FLT#8485, BHM-BOS. (ETOPS) "APU LOOP A FAILED ( APU FIRE DETECTION SYSTEM LOOP A . REMOVED AND REPLACED APU LOOP IAW AMM 26-13-15 OPS CHECK GOOD. MX-4 UPDATED, STICKER REMOVED AC OK TO SVC.
- Difficulty date
- October 8, 2025
- Submitted
- October 9, 2025
- Operation
- Air carrier
- Aircraft
- N4022J
- Make and model
- Airbus A321271NX
- Aircraft serial
- 10303
- Aircraft time
- 15,847 hours, 2,345 cycles
- System (JASC)
- 2612 · Fire Detection
- Part
- Fire Loop
- Part number
- 455001
- Part serial
- 25940
- Condition
- Failed
- Location
- Zone 100
- Part time
- 15,847 hours, 2,345 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.