# SDR USAA2013041800007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 17, 2013
- Submitted: April 18, 2013
- Operation: Air carrier
- Aircraft: N627AW
- Make and model: Airbus A320-231
- Registry model: [Airbus A320-231](https://openairdocs.org/model/airbus-industrie-a320-231) (OpenAirDocs)
- Aircraft serial: 66
- Aircraft time: 75,455 hours, 33,916 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145410
- Part serial: 3253
- Condition: Inoperative
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2013041800007

## Discrepancy

C1 CHECK - DURING OPERATIONAL TEST OF EMERGENCY LIGHTS IAW AMM 33-51-00 THE PTP DISPLAY SHOWED "FWD UNIT FAULT L" AND "AFT BATTERY L".  REPLACED EPSU 10WL AS PER AMM 33-51-38 PAGE BLOCK 0401 AND PERFORMED OPERATIONAL TEST OF EMERGENCY LIGHTS AND THE TEST IS OK.

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