SDR AALA20141105003

Service difficulty report · Smoke Detector · Boeing 737823

Difficulty date: October 21, 2014
Submitted: November 6, 2014
Operation: Air carrier
Aircraft: N938AN
Make and model: Boeing 737823
Aircraft serial: 29533
Aircraft time: 42,020 hours, 17,295 cycles
System (JASC): 2611 · Smoke Detection
Part: Smoke Detector
Part number: PU90461R3
Condition: False Activation
Location: Lavatory
Stage of operation: DE
How discovered: O
Nature of condition: N
Precautionary procedure: K

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

What was found

LAVATORY SMOKE WARNING CAME ON AT 18000 FEET IN DESCENT. WARNING WENT OFF AT 3000 FEET. VISUALLY INSPECTED & FOUND NO SMOKE IN ANY LAVATORY. R & R SMOKE DETECTORS IN ALL 3 LAVATORIES IAW AMM 26-14-01-00-801, 26-14-01-400-801 & 26-14-00-730-801. SYSTEMS CHECKED NORMAL.