What was found
AIRCRAFT IN BASE MAINTENANCE: EPSU SYSTEM TEST SHOWS, BAT/EPSU (12WR) FAULT. MAINTENANCE REPLACED EMERGENCY POWER SUPPLY BATTERY AT THE 12WL POSITION IAW AMM 33-51-38.
- Difficulty date
- September 24, 2025
- Submitted
- September 29, 2025
- Operation
- Air carrier
- Aircraft
- N958XV
- Make and model
- Airbus A321253N
- Aircraft serial
- 8819
- Aircraft time
- 18,266 hours, 4,948 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Condition
- Faulty
- Location
- Zone 200
- 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.