# SDR AALA202407295512

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 2024
- Submitted: July 29, 2024
- Operation: Air carrier
- Aircraft: [N975UY](https://openairdocs.org/aircraft/N975UY), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4935
- Aircraft time: 40,885 hours, 16,171 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Faulty
- Location: Zone 200
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202407295512

## Discrepancy

AIRCRAFT WAS NOT GROUNDED:  EMERGENCY POWER SUPPLY UNIT AFT LEFT BATTERY FAULT. REPLACED EMERGENCY POWER SUPPLY UNIT.

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