What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT 14WL FAILED EMERGENCY POWER SUPPLY UNIT SYSTEM TEST. REMOVED AND REPLACED 14WL EMERGENCY POWER SUPPLY UNIT BATTERY PER AMM 33-51-38.
- Difficulty date
- April 22, 2021
- Submitted
- April 26, 2021
- Operation
- Air carrier
- Aircraft
- N125AA
- Make and model
- Airbus A321231
- Aircraft serial
- 6272
- Aircraft time
- 21,300 hours, 6,105 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Condition
- Failed
- 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.