What was found
AIRCRAFT WAS NOT GROUNDED. LEFT AFT EMERGENCY POWER SUPPLY UNIT BATTERY FAULT. REMOVED AND REPLACED LEFT AFT EMERGENCY POWER SUPPLY UNIT BATTERY, PER AMM 33-51-38.
- Difficulty date
- October 31, 2020
- Submitted
- November 2, 2020
- Operation
- Air carrier
- Aircraft
- N164NN
- Make and model
- Airbus A321231
- Aircraft serial
- 6909
- Aircraft time
- 13,729 hours, 5,163 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Condition
- Faulted
- 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.