# SDR AALA20170901004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 29, 2017
- Submitted: September 6, 2017
- Operation: Air carrier
- Aircraft: [N794AN](https://openairdocs.org/aircraft/N794AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30256
- Aircraft time: 67,723 hours, 8,624 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Part serial: 17434
- Condition: No Test
- Location: Emergency Lights
- Part time: 28,614 hours, 5,066 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/AALA20170901004

## Discrepancy

EMERGENCY LIGHTS OVERHEAD POWER SUPPLY M33408 AT THE R4 DOOR FAILED TO TEST.  REMOVED AND REPLACED THE POWER SUPPLY IAW AMM 33-51-06.  OPERATIONAL CHECKED GOOD.

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