Service difficulty report · Circuit Card · Boeing 7673JHF

Difficulty date
October 28, 2020
Submitted
November 4, 2020
Operation
Air carrier
Aircraft
N644GT
Make and model
Boeing 7673JHF
Aircraft serial
37810
Aircraft time
19,734 hours, 4,634 cycles
Part
Circuit Card
Part number
89873202
Part serial
7797
Condition
Malfunctioned
Location
Fire Detection
Stage of operation
NR
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

STS MESSAGE LT ENGINE FIRE LP 1 APPEARED. TRANSFER TO DMI NR 136865, IAW MEL 26-11-01-01, CAT C. PERFORMED T/S AND FOUND LOWER FWD DETECTOR TS683 A1 TERMINAL CHAFED. REPAIRED WIRE AND INSULATION CHECKS OK, IAW WDM 26-11-11 ALSO AS PRECAUTIONARY REMOVED AND REPLACED NEW FIRE DETECT CARD, IAW AMM 26-10-01 AND CHECKS OK. MCC MONITORING ITEM. MDDR STILL OPEN. NO FURTHER DEFECT FOUND SINCE PREVIOUS LOG NR 1248241 ITEM M3 (28OCT20). MCC REQUEST CLEARED ITEM. CLEARED DMI NR 136865, REMOVED PLACARD, T/I 0650Z/ ZS. NOTIFIED MCC.

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