What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT BATTERIES FAILED IN POSITION 12WL. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT BATTERY'S POSITION 12WL PER AMM 33-51-38.
- Difficulty date
- September 9, 2020
- Submitted
- September 9, 2020
- Operation
- Air carrier
- Aircraft
- N544UW
- Make and model
- Airbus A321231
- Aircraft serial
- 4847
- Aircraft time
- 30,504 hours, 11,513 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321430
- Condition
- Failed
- 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.