What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT SYSTEM TEST FAIL. EMERGENCY BATTERY 13WL FAULTY. REMOVED AND REPLACED BATTERY OF EMERGENCY POWER SUPPLY UNIT 13WL PER AMM 33-51-38.
- Difficulty date
- August 24, 2021
- Submitted
- August 25, 2021
- Operation
- Air carrier
- Aircraft
- N102NN
- Make and model
- Airbus A321231
- Aircraft serial
- 5860
- Aircraft time
- 25,096 hours, 5,113 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Condition
- Faulted
- Location
- Emergency Lights
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.