What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT 11WL BATTERY FAILED SYSTEM TEST. REPLACED EMERGENCY POWER SUPPLY UNIT 11WL BATTERY PER AMM 33-51-38
- Difficulty date
- August 23, 2026
- Submitted
- August 25, 2026
- Operation
- Air carrier
- Aircraft
- N433AN
- Make and model
- Airbus A321253NX
- Aircraft serial
- 10511
- Aircraft time
- 20,693 hours, 5,519 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.