# SDR CALA2025022002402

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 19, 2025
- Submitted: February 21, 2025
- Operation: Air carrier
- Aircraft: [N38443](https://openairdocs.org/aircraft/N38443), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 31655
- Aircraft time: 44,437 hours, 15,942 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Condition: False Indication
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025022002402

## Discrepancy

FWD LAV SMOKE ALARM GOING OFF UPON ARRIVAL TO THE AIRCRAFT NO EVIDENCE OF SMOKE OR ODOR, SUSPECT SET OFF DUE TO COLD TEMPERATURES.REF AMM 20-60-01 AND FM LAV SMOKE BREAKER CYCLED; ALARM EXTINGUISHED. OK TO CONTINUE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.