What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT TEST FAILED PER JOB CARD 27L00025012 AT LOCATION 13WL. REPLACED EMERGENCY POWER SUPPLY UNIT BATTERY AT 13WL PER AMM 33-51-38.
- Difficulty date
- June 6, 2024
- Submitted
- June 7, 2024
- Operation
- Air carrier
- Aircraft
- N551UW
- Make and model
- Airbus A321231
- Aircraft serial
- 4940
- Aircraft time
- 40,373 hours, 15,751 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- AD321431
- Condition
- No Test
- Location
- Emergency Lights
- 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.