# SDR AALA202107121331

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 10, 2021
- Submitted: July 12, 2021
- Operation: Air carrier
- Aircraft: [N544UW](https://openairdocs.org/aircraft/N544UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4847
- Aircraft time: 32,109 hours, 12,203 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: Inoperative
- Location: Emergency Lights
- 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/AALA202107121331

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: PASSENGER CABIN EMERGENCY POWER SUPPLY UNIT 10WL INOPERATIVE. REPLACED BATTERY PER AMM 33-51-38-400-002-A.

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