# SDR AALA202207067972

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 5, 2022
- Submitted: July 6, 2022
- Operation: Air carrier
- Aircraft: [N921NN](https://openairdocs.org/aircraft/N921NN), registered now
- Make and model: Boeing 737
- Aircraft serial: 33229
- Aircraft time: 27,263 hours, 11,569 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71702001
- Condition: Intermittent
- 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/AALA202207067972

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: EMERGENCY EXIT LIGHT IN CEILING AFT GALLEY AND ADJACENT TO DOOR 2L WERE INTERMITTENT. REMOVED AND REPLACED BATTERY PACK POWER SUPPLY (M1673) PER AMM 33-51-06.

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