What was found
AIRCRAFT WAS NOT GROUNDED: DURING EMERGENCY POWER SUPPLY UNIT SYSTEM TEST EMERGENCY POWER SUPPLY UNIT BATTERY 14WL MID RIGHT FAILED. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT BATTERY 14WL MID RIGHT PER AMM 33-51-38
- Difficulty date
- May 1, 2021
- Submitted
- May 3, 2021
- Operation
- Air carrier
- Aircraft
- N561UW
- Make and model
- Airbus A321231
- Aircraft serial
- 5317
- Aircraft time
- 28,091 hours, 11,130 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Condition
- No Test
- Location
- Emergency Light
- 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.