What was found
AIRCRAFT WAS NOT GROUNDED. EMERGENCY POWER SUPPLY UNIT 15WL FAULTED ON EMERGENCY POWER SUPPLY UNIT BITE TEST. REMOVED AND REPLACED 15WL EMERGENCY POWER SUPPLY UNIT BATTERY, PER AMM 33-51-38.
- Difficulty date
- December 1, 2020
- Submitted
- December 3, 2020
- Operation
- Air carrier
- Aircraft
- N148AN
- Make and model
- Airbus A321231
- Aircraft serial
- 6790
- Aircraft time
- 16,070 hours, 6,067 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Condition
- Inoperative
- Location
- Emergency Lights
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.