# SDR AALA202110198671

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 16, 2021
- Submitted: October 19, 2021
- Operation: Air carrier
- Aircraft: [N424AN](https://openairdocs.org/aircraft/N424AN), registered now
- Make and model: Airbus A321-253NX
- Registry model: [Airbus A321-253NX](https://openairdocs.org/model/airbus-a321-253nx) (OpenAirDocs)
- Aircraft serial: 10141
- Aircraft time: 3,431 hours, 946 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 32146210
- Condition: Faulted
- Location: Zone 200 - Fuse
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202110198671

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: DURING PS CHECK FOUND EMERGENCY POWER SUPPLY UNIT BATTERY FAULT FIN 13WL, 16WL, AND 17WL. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT BATTERY FIN 13WL (AALA202110196281), 16WL, 17WL (AALA202110196666) PER AMM 33-51-38.

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