# SDR AALA202305175604

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 14, 2023
- Submitted: May 17, 2023
- Operation: Air carrier
- Aircraft: [N955AN](https://openairdocs.org/aircraft/N955AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29540
- Aircraft time: 63,506 hours, 26,862 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71701100
- Part serial: 510185
- Condition: No Test
- 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/AALA202305175604

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: LEFT HAND OVERWING EMERGENCY BATTERY FAILS CAPACITY CHECK. REPLACED EMERGENCY LIGHT POWER SUPPLY M1694 BATTERY PACK PER AMM 33-51-06-960-805.

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