# SDR SWAA2023061557772

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 10, 2023
- Submitted: June 15, 2023
- Operation: Air carrier
- Aircraft: [N437WN](https://openairdocs.org/aircraft/N437WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29832
- Aircraft time: 66,985 hours, 39,591 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Failed
- Location: Zn 200 Fus Top
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023061557772

## Discrepancy

EMERGENCY BATTERY PACK (M1668) FAILED DEEP CYCLE CHECK<[01] REMOVED AND INSTALLED EMERGENCY BATTERY PACK M1668 AS PER REF AMM 33-51-06-960-805. TEST NORMAL;[02] VERIFIED STEP #1

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