What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT BATTERY FAIL OPERATIONS CHECK AT 14WL. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT BATTERY AT 14WL PER AMM 33-51-38.
- Difficulty date
- September 27, 2021
- Submitted
- September 29, 2021
- Operation
- Air carrier
- Aircraft
- N903AA
- Make and model
- Airbus A321231
- Aircraft serial
- 7566
- Aircraft time
- 13,377 hours, 5,127 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Condition
- Inoperative
- Location
- Zone 200 - Fuse
- 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.