# SDR AALA202012319008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 30, 2020
- Submitted: December 31, 2020
- Operation: Air carrier
- Aircraft: [N510UW](https://openairdocs.org/aircraft/N510UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 3858
- Aircraft time: 41,056 hours, 14,835 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/AALA202012319008

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE.  INOPERATIVE BATTERY EMERGENCY POWER SUPPLY UNIT 14WL ON PASSENGER CABIN (2 EA).  REPLACED BATTERY OF EMERGENCY POWER SUPPLY UNIT 14WL, PER AMM 33-51-38-400-002-A.

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