# SDR CALA2026012313177

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 20, 2026
- Submitted: January 23, 2026
- Operation: Air carrier
- Aircraft: [N673UA](https://openairdocs.org/aircraft/N673UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 29241
- Aircraft time: 92,305 hours, 18,222 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: 47557129
- Condition: False Activation
- Location: Zone 700
- Stage of operation: AP
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026012313177

## Discrepancy

LAV 2R SMOKE DETECTOR WENT OFF ON APPROACH NO ONE INSIDE AND NO EVIDENCE OF SMOKE WHEN CREW REPORTED THIS TO HMC THEY ADDED THAT THERE WAS NO SMELL IN THE LAV AS WELL. REMOVED AND REPLACED SMOKE DETECTOR AT LAV M IN REF TO AMM 26-13-01-424-004. SYSTEM TEST PASSED IN REF TO AMM 26-13-00-735-034. OK TO CONTINUE.

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