# SDR AALA202609142863

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2026
- Submitted: September 14, 2026
- Operation: Air carrier
- Aircraft: [N153AN](https://openairdocs.org/aircraft/N153AN), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6908
- Aircraft time: 32,790 hours, 13,004 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 321431
- Condition: Faulted
- Location: Zone 200
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202609142863

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: DURING PERIODIC SERVICE CHECK, FOUND EMERGENCY POWER SUPPLY UNIT BATTERY 12WL FAULTED DURING BITE CHECK.  MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT BATTERY 12WL IAW AMM 33-51-38.  BITE CHECK GOOD. OPS CHKD GOOD.

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