What was found
AIRCRAFT IN BASE MAINTENANCE: EMERGENCY POWER SUPPLY UNIT 14WL FAILS OPERATIONAL CHECK, REFLECTS FAULT ON THE MCDU. **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)
- Difficulty date
- August 24, 2021
- Submitted
- August 25, 2021
- Operation
- Air carrier
- Aircraft
- N562UW
- Make and model
- Airbus A321231
- Aircraft serial
- 5332
- Aircraft time
- 28,150 hours, 11,270 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- 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.