# SDR SWAA2020033034693

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 25, 2020
- Submitted: March 30, 2020
- Operation: Air carrier
- Aircraft: N746SW
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29798
- Aircraft time: 72,771 hours, 42,936 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Condition: Malfunctioned
- Location: Lavatory
- Stage of operation: UK
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2020033034693

## Discrepancy

FIRE ALARM AFT LAV WILL NOT SHUT OFF (SMOKE ALARM) / CLEARING DMA: 0412848 R&R AFT LAV SMOKE DET- ASSY PER AMM 26-14-01 CL# 34609 POS: AFT PN OFF:DU90-499 PN ON:474560-21 SN OFF: ------___SN ON:---------

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