# SDR AALA20170315003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 15, 2017
- Submitted: March 17, 2017
- Operation: Air carrier
- Aircraft: [N780AN](https://openairdocs.org/aircraft/N780AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 29956
- Aircraft time: 67,326 hours, 8,488 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Part serial: 16105
- Condition: No Test
- Location: Emergency Lights
- Part time: 27,832 hours, 3,161 cycles
- 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/AALA20170315003

## Discrepancy

EMERGENCY EXIT LIGHTS FROM ROW 9 TO 13 BOTH AISLES FAILED TO TEST.  REMOVED AND REPLACED POWER SUPPLY M33098 IAW AMM 33-51-06-960-802.  OPERATIONAL CHECKED GOOD.

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