# SDR AALA20120904004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 31, 2012
- Submitted: September 6, 2012
- Operation: Air carrier
- Aircraft: [N772AN](https://openairdocs.org/aircraft/N772AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 29580
- Aircraft time: 55,062 hours, 7,320 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Part serial: 14610
- Condition: Failed
- 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/AALA20120904004

## Discrepancy

EMERGENCY POWER SUPPLY M33424 FAILED.  REMOVED AND REPLACED EMERGENCY POWER SUPPLY M33424.  OPS CHECK NORMAL.

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