What was found
AIRCRAFT WAS NOT GROUNDED: BATTERY/EMERGENCY POWER SUPPLY UNIT (13WL) AFT LEFT FAULT. REMOVED AND REPLACED AFT EMERGENCY POWER SUPPLY UNIT (13WL) BATTERY PER TSM 33-51-00.
- Difficulty date
- October 25, 2021
- Submitted
- October 25, 2021
- Operation
- Air carrier
- Aircraft
- N404AN
- Make and model
- Airbus A321253NX
- Aircraft serial
- 8758
- Aircraft time
- 6,508 hours, 1,843 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Condition
- Faulty
- 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.