What was found
AIRCRAFT NOT GROUNDED - EPSU (EMERGENCY POWER SUPPLY UNIT) 11WL BATTERY FAULT, WHILE PERFORMING EPSU TEST. REMOVED AND REPLACED EPSU 11WL BATTERY PER AMM 33-51-38, OPERATIONAL CHECK GOOD.
- Difficulty date
- June 11, 2020
- Submitted
- June 12, 2020
- Operation
- Air carrier
- Aircraft
- N401AN
- Make and model
- Airbus A321253N
- Aircraft serial
- 8701
- Aircraft time
- 3,274 hours, 957 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Condition
- Faulted
- Location
- Cabin
- 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.