What was found
AIRCRAFT WAS NOT GROUNDED: 11WL EMERGENCY POWER SUPPLY UNIT BATTERY FAILED TEST. REMOVED AND REPLACED 11WL EMERGENCY POWER SUPPLY UNIT BATTERY PACK PER AMM 33-51-38.
- Difficulty date
- July 18, 2021
- Submitted
- July 19, 2021
- Operation
- Air carrier
- Aircraft
- N578UW
- Make and model
- Airbus A321231
- Aircraft serial
- 6035
- Aircraft time
- 23,436 hours, 9,326 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Condition
- Failed
- Location
- Zone 200 - Fuse
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.