SDR SWAA2026012964839

Service difficulty report · Smoke Detector · Boeing 7377Q8

Difficulty date: January 27, 2026
Submitted: January 29, 2026
Operation: Air carrier
Aircraft: N7873A
Make and model: Boeing 7377Q8
Aircraft serial: 29350
Aircraft time: 60,459 hours, 33,993 cycles
System (JASC): 2611 · Smoke Detection
Part: Smoke Detector
Condition: False Activation
Location: Zone 900
Stage of operation: DE
How discovered: O
Nature of condition: N
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FWD LAVATORY SMOKE DETECTOR ACTIVATED NUMEROUS TIMES ON DESCENT, NO VISIBLE SMOKE, FIRE OF FUMES PRESENT. THE DETECTOR WAS RESET EACH TIME. OK TO CONTINUE IAW MEL 26-16-01 SP1, & SP3. R & R THE FWD LAVATORY SMOKE DETECTOR. OPS CHECKED GOOD IAW AMM 26-14-01.

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