What was found
AIRCRAFT WAS NOT GROUNDED: PERFORMED EPSU SYSTEM TEST FOUND 13WL BATTERY MESSAGE. MAINTENANCE REPLACED 13WL EPSU BATTERY IAW AMM 33-51-38
- Difficulty date
- October 8, 2026
- Submitted
- October 11, 2026
- Operation
- Air carrier
- Aircraft
- N996AN
- Make and model
- Airbus A321231
- Aircraft serial
- 7310
- Aircraft time
- 29,220 hours, 11,810 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- AD321431
- Condition
- Fault Message
- 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.