What was found
AIRCRAFT IN BASE MAINTENANCE: EMERGENCY POWER SUPPLY UNIT 13WL FAILED SYSTEM BITE TEST - MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 13WL *AALA202608272290* AND BATTERY *AALA202608273799* PER AMM 33-51-38
- Difficulty date
- August 23, 2026
- Submitted
- August 27, 2026
- Operation
- Air carrier
- Aircraft
- N426AN
- Make and model
- Airbus A321253NX
- Aircraft serial
- 10195
- Aircraft time
- 21,660 hours, 5,827 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- AD321431
- Condition
- No Test
- Location
- Zone 200
- 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.