# SDR AALA202610081983

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 7, 2026
- Submitted: October 9, 2026
- Operation: Air carrier
- Aircraft: [N907AA](https://openairdocs.org/aircraft/N907AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7732
- Aircraft time: 28,878 hours, 11,433 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/AALA202610081983

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: ON CIDS 1 EMERGENCY POWER SUPPY UNIT SYSTEM TEST FOUND FAULT EMERGENCY POWER SUPPY UNIT (15 WL) MID LEFT. MAINTENANCE REPLACED BATTERY ON THE EMERGENCY POWER SUPPLY UNIT LOCATION 15WL. PER AMM 33-51. OPS CHECK GOOD.

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