# SDR AALA202609252779

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 24, 2026
- Submitted: September 25, 2026
- Operation: Air carrier
- Aircraft: [N770AN](https://openairdocs.org/aircraft/N770AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 29578
- Aircraft time: 102,581 hours, 13,070 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Condition: Inoperative
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202609252779

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: EMERGENCY LIGHT CEILING AREAS LEFT SIDE OF AISLE FROM SEAT 17C TO 25C NOT WORKING. REMOVED AND REPLACED POWER SUPPLY (M33400) IAW AMM 33-51-06.

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