# SDR DALA1231363211

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 11, 2012
- Submitted: May 14, 2012
- Operation: Air carrier
- Aircraft: N311US
- Make and model: Airbus A320-211
- Registry model: [Airbus A320-211](https://openairdocs.org/model/airbus-industrie-a320-211) (OpenAirDocs)
- Aircraft serial: 125
- Aircraft time: 6,223 hours, 2,717 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Inoperative
- Location: Emergency Light
- 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/DALA1231363211

## Discrepancy

DURING SERVICE CHECK, FOUND THE LEFT EMERGENCY POWER SUPPLY UNIT AT 10WL FAILED TEST.  MAINTENANCE REPLACED POWER SUPPLY UNIT AND FUNCTIONAL CHECK WAS NORMAL.  A/C RETURNED TO SERVICE.

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