# SDR SWAA2021042665839

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 22, 2021
- Submitted: April 26, 2021
- Operation: Air carrier
- Aircraft: [N448WN](https://openairdocs.org/aircraft/N448WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33721
- Aircraft time: 57,639 hours, 34,109 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Failed
- Location: Emergency Light
- 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/SWAA2021042665839

## Discrepancy

EMERGENCY LIGHTING BATTERY PACK CAPACITY CHECK FAILED AT LOCATIONS M1672; M1673; M1674; M1675. R&R EMERGENCY LIGHTING BATTERY PACKS AT LOCATIONS M1672; M1673; M1674; M1675 PER AMM 335106

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