What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT 13WL BATTERY FAULT MESSAGE DISPLAYED DURING CIDS 1 OPERATIONAL TEST OF THE EMERGENCY LIGHTS. MAINTENANCE REPLACED BATTERY AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.
- Difficulty date
- October 19, 2024
- Submitted
- October 21, 2024
- Operation
- Air carrier
- Aircraft
- N923US
- Make and model
- Airbus A321231
- Aircraft serial
- 6543
- Aircraft time
- 30,595 hours, 12,385 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, J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.