What was found
AIRCRAFT IN BASE MAINTENANCE: WHILE PERFORMING EMERGENCY LIGHT TEST, FAULT "EPSU BATTERY MID R" WAS DISPLAYED ON THE PTP PANEL. REPLACED BATTERY AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 33-51-38.
- Difficulty date
- July 16, 2025
- Submitted
- July 18, 2025
- Operation
- Air carrier
- Aircraft
- N161UW
- Make and model
- Airbus A321211
- Aircraft serial
- 1403
- Aircraft time
- 76,646 hours, 29,696 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- AD321431
- Condition
- No Test
- 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.