What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT (12WL) FAILED TEST. REMOVED AND REPLACED (12WL) BATTERY EMERGENCY EXIT PER AMM 33-51-38.
- Difficulty date
- October 18, 2021
- Submitted
- October 19, 2021
- Operation
- Air carrier
- Aircraft
- N407AN
- Make and model
- Airbus A321253NX
- Aircraft serial
- 8898
- Aircraft time
- 5,362 hours, 1,518 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- 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.