Service difficulty report · Smoke Detector · Boeing 74747UF

Difficulty date
August 7, 2026
Submitted
August 7, 2026
Operation
Air carrier
Aircraft
N496MC
Make and model
Boeing 74747UF
Aircraft serial
29257
Aircraft time
105,571 hours, 17,762 cycles
Part
Smoke Detector
Part number
PU90461
Part serial
16670
Condition
Activated
Location
Crew Rest
Stage of operation
LD
How discovered
O
Nature of condition
B
Precautionary procedure
B

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

What was found

SMOKE IN CREW REST EICAS AT 1955Z FOR ABOUT 5 MINS. SMOKE DISSIPATED AND EICAS DID NOT RETURN. REPLACED ALL PACK WATER SEPERATOR COALESCER BAGS IAW AMM 05-51-56 AND FIM 21-00 TASK 810. REPLACED CREW REST AREA SMOKE DETECTOR IAW AMM 26-14-51 AND 21-51-05. NO SMOKE, FUMES, OR ELECTRICAL FAULT IN THE CABIN NOTED.</P>)

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