# SDR AALA202303276525

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 25, 2023
- Submitted: March 27, 2023
- Operation: Air carrier
- Aircraft: [N755AN](https://openairdocs.org/aircraft/N755AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30263
- Aircraft time: 82,654 hours, 10,588 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71701100
- Part serial: 183597
- Condition: Inoperative
- Location: Zone 200 - Fuse
- 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/AALA202303276525

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: ALL EMERGENCY LIGHTS TO EMERGENCY LIGHTS POWER SUPPLY M33407 LOCATED ABOVE L4 DOOR ARE INOPERATIVE. REPLACED EMERGENCY LIGHTS POWER SUPPLY M33407 BATTERY PACK PER 33-51-06-960-802. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK.

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