What was found
AIRCRAFT WAS NOT GROUNDED. FORWARD LEFT EMERGENCY POWER SUPPLY UNIT (10WL) BATTERY INOPERATIVE. REMOVED AND REPLACED FORWARD LEFT EMERGENCY POWER SUPPLY UNIT (10WL) BATTERY, PER AMM 33-51-38.
- Difficulty date
- November 24, 2020
- Submitted
- November 27, 2020
- Operation
- Air carrier
- Aircraft
- N918US
- Make and model
- Airbus A321231
- Aircraft serial
- 6443
- Aircraft time
- 18,453 hours, 7,199 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321430
- Condition
- Inoperative
- Location
- Emergency Lights
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.