What was found
AIRCRAFT IN BASE MAINTENANCE: EMERGENCY POWER SUPPLY UNIT TEST 10WL BATTERY FAILURE. TESTED EMERGENCY POWER SUPPLY UNIT FLAGGED BATTERY FAULT. REMOVED AND REPLACED BATTERY PER AMM 33-51-38. FAULT CLEARED.
- Difficulty date
- May 12, 2021
- Submitted
- May 13, 2021
- Operation
- Air carrier
- Aircraft
- N973UY
- Make and model
- Airbus A321231
- Aircraft serial
- 4893
- Aircraft time
- 32,072 hours, 12,112 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Condition
- No Test
- Location
- Emergency Lights
- 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.