# SDR SWAA2020031642504

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 15, 2020
- Submitted: March 16, 2020
- Operation: Air carrier
- Aircraft: N7812G
- Make and model: Boeing 737-76N
- Registry model: [Boeing 737-76N](https://openairdocs.org/model/boeing-737-76n) (OpenAirDocs)
- Aircraft serial: 32582
- Aircraft time: 49,919 hours, 29,838 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Fuse
- Condition: Blown
- Location: Cabin
- 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/SWAA2020031642504

## Discrepancy

EMERGENCY LIGHTS CONNECTED TO M1670 ARE INOP         OPENED RETURN AIR GRILLE PER AMM 21-23-03-000-801 59391U 15MAR20 LEAD 820 19MAR20 UPON TROUBLESHOOTING BATTERY PACK M1670 DISCOVERED FUSE, REPLACED FUSE AND PERFORMED GOOD FUNCTIONAL TEST PER AMM 33-51-06-960-804 59391U 15MAR20 LEAD 820 15MAR20 INSP 24 15MAR20 OK TO CLOSE RETURN AIR GRILLE LEAD 820 15MAR20 INSP 24 15MAR20 CLOSED RETURN AIR GRILLE PER AMM 21-23-03-400-802 59391U 15MAR20

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