What was found
AIRCRAFT IN BASE MAINTENANCE: EMERGENCY POWER SUPPLY UNIT 10WL FAULTED DURING SYSTEM TEST. REPLACED BATTERY FOR EMERGENCY POWER SUPPLY UNIT 10WL PER AMM 33-51-38 AND ACCOMPLISHED AN SATISACTORY OPERATIONAL CHECK WITH NO FAULTS NOTED.
- Difficulty date
- June 8, 2026
- Submitted
- June 11, 2026
- Operation
- Air carrier
- Aircraft
- N912UY
- Make and model
- Airbus A321231
- Aircraft serial
- 6264
- Aircraft time
- 37,996 hours, 15,687 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.