# SDR DALA2015032802460

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 27, 2015
- Submitted: March 30, 2015
- Operation: Air carrier
- Aircraft: [N812NW](https://openairdocs.org/aircraft/N812NW), registered now
- Make and model: Airbus A330-323
- Registry model: [Airbus A330-323](https://openairdocs.org/model/airbus-a330-323) (OpenAirDocs)
- Aircraft serial: 0784
- Aircraft time: 38,047 hours, 5,057 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Inoperative
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2015032802460

## Discrepancy

DURING OPS TEST OF EMERGENCY LIGHT FROM MCDU EPSU 19WL FAILED TEST FOR HFA CHECK.  R & R EPSU.

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