What was found
EPSU (13WL) AND EPSU (12WL) FAILED THE EPSU BITE TEST-REMOVED AND REPLACED EPSU BATTERY FOR POSITION 13WL AND 12WL IAW AMM 33-51-38. OPS CHECK GOOD.
- Difficulty date
- September 24, 2025
- Submitted
- September 25, 2025
- Operation
- Air carrier
- Aircraft
- N686NK
- Make and model
- Airbus A321231
- Aircraft serial
- 8141
- Aircraft time
- 24,403 hours, 10,851 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Epsu
- Part number
- 321431
- Part serial
- 859181
- Condition
- Inoperative
- Location
- Zone 200
- Part time
- 7,778 hours, 3,563 cycles
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.