# SDR SWAA2021120848494

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 29, 2021
- Submitted: December 8, 2021
- Operation: Air carrier
- Aircraft: [N236WN](https://openairdocs.org/aircraft/N236WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 34631
- Aircraft time: 52,674 hours, 31,240 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- Location: Cabin
- Stage of operation: UK
- 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/SWAA2021120848494

## Discrepancy

EMERGENCY LIGHTS DON'T COME ON ON 2LH; 6LH; 6RH; 9 RH; AND 11RH SEATS. ; / [01] PERFORMED T/S AS PER B737 WDM 33-51-11; WDM 33-51-12 AND WDM 33-51-13; FOUND BATTERY PACKS AT POSITIONS M1674 AND M1668 DEFECTIVE.; [02] VERIFIED 1;COMPLETE; [03] REMOVED AND REPLACED BATTERY PACK M1674; AS PER B737 AMM 33-51-06-960-805; AND PERFORMED OPS CHECK ON ROWS 2LH; 6LH; 6RH; 9RH AND 11RH; TESTS FOUND NORMAL.; [04] VERIFIED STEP 3

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