What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT SYSTEM TEST AS PER PS CHECK. FAULTED EMERGENCY POWER SUPPLY UNIT. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT BATTERY 10WL PER AMM 33-51-38.
- Difficulty date
- May 22, 2021
- Submitted
- May 24, 2021
- Operation
- Air carrier
- Aircraft
- N106NN
- Make and model
- Airbus A321231
- Aircraft serial
- 5932
- Aircraft time
- 23,757 hours, 4,873 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Condition
- Inoperative
- 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.