# SDR CALA2026010512660

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 2, 2026
- Submitted: January 5, 2026
- Operation: Air carrier
- Aircraft: [N37273](https://openairdocs.org/aircraft/N37273), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31591
- Aircraft time: 74,548 hours, 26,787 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Condition: False Activation
- Location: Zone 900
- Stage of operation: IN
- 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/CALA2026010512660

## Discrepancy

LAVATORY D3,  SMOKE ALARM WITH NO SIGNS OF SMOKE. ALARM TURNED OFF ON IT`S OWN.  NO SMOKE OR ODOR WAS TRACED BY F/A.  LOOKED FOR ANYTHING SUSPICIOUS INCLUDING UNDER SINK AND WAS UNABLE TO LOCATE ANYTHING SUSPICIOUS.  NO HISTORY FOUND.  REF TSM 26-14 TASK 801, SINCE ALARM WAS VERY BRIEF, AND STOPPED THE FAULT IS CLEARED. NOTE PASSENGER WAS INSIDE WHEN ALARM SOUNDED.

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