What was found
AIRCRAFT IN BASE MAINTENANCE: FAULT MESSAGE DISPLAYS FOR EMERGENCY POWER SUPPLY UNIT 10WL DURING SYSTEM TEST. REPLACED EMERGENCY POWER SUPPLY UNIT 10WL AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 33-51-38.
- Difficulty date
- May 29, 2025
- Submitted
- May 30, 2025
- Operation
- Air carrier
- Aircraft
- N131NN
- Make and model
- Airbus A321231
- Aircraft serial
- 6472
- Aircraft time
- 33,880 hours, 11,123 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Part number
- 32146210
- Part serial
- 147890
- Condition
- No Test
- Location
- Zone 200
- Part time
- 33,879 hours, 11,123 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.