# SDR AALA202307124015

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 6, 2023
- Submitted: July 12, 2023
- Operation: Air carrier
- Aircraft: [N757AN](https://openairdocs.org/aircraft/N757AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 32636
- Aircraft time: 81,885 hours, 10,611 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Condition: Failed
- Location: Zone 200 - Fuse
- 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/AALA202307124015

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: OVERHEARD AISLE EMERGENCY EXIT SIGNS AT DOOR 3R FAILED OPERATIONAL TEST. REPLACED EMERGENCY LIGHTS POWER SUPPLY M33404 PER AMM 33-51-06. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK.

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