Service difficulty report · Smoke Detector · Boeing 74745E

Difficulty date
January 13, 2023
Submitted
January 17, 2023
Operation
Air carrier
Aircraft
N473MC
Make and model
Boeing 74745E
Aircraft serial
27174
Aircraft time
113,147 hours, 20,327 cycles
Part
Smoke Detector
Part number
PPC120000
Part serial
7199
Condition
Faulted
Location
Aft Cargo
Stage of operation
CL
How discovered
O
Nature of condition
N
Precautionary procedure
A

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

What was found

EICAS, CARGO AFT FIRE ON TAKEOFF. EXTINGUISHED BEFORE FINISHING CHECKLIST. LWR EICAS SHOWN INTERMITTENT STATUS MSG CARGO AFT 1 LOOP A, FAIL AND FAULT MSG REPORT SHOWN 26354. REFER TO SUPPLEMENT FIM 26-16 TASK 892, SMOKE DETECTOR M9121 REPLACED AND MAINTENANCE TESTED NORMAL IAW SUPPLEMENT AMM 26-16-01. LOG 1570449 ITEM #8 REFER TO SUPPLEMENT FIM 26-16 TASK 892 SMOKE DETECTOR M9125 ALSO REPLACED FOR PRECAUTION AND MAINTENANCE TEST RESULT NORMAL IAW SUPPLEMENT AMM 26-16-01.

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