What was found
AIRCRAFT IN BASE MAINTENANCE: DURING OPERATIONAL TEST OF THE EMERGENCY LIGHTS, POWER SUPPLY UNIT 11WL SHOWS FAULT. REPLACED EMERGENCY POWER SUPPLY UNIT PER AMM 33-51-38-400-001-A.
- Difficulty date
- September 10, 2021
- Submitted
- September 13, 2021
- Operation
- Air carrier
- Aircraft
- N538UW
- Make and model
- Airbus A321231
- Aircraft serial
- 4050
- Aircraft time
- 36,487 hours, 14,248 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Part number
- 32146210
- Part serial
- 132976
- Condition
- No Test
- Location
- Emergency Lights
- Part time
- 36,487 hours, 14,248 cycles
- 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.