Service difficulty report · Hmu · Boeing 74747UF

Difficulty date
February 24, 2005
Submitted
March 9, 2005
Operation
Air carrier
Aircraft
N492MC
Make and model
Boeing 74747UF
Aircraft serial
29253
Engine
Ge CF680C
Part
Hmu
Condition
Malfunctioned
Location
Nr 2 Engine
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

PVG/ANC - NR 2 ENGINE FAILED DURING CRUISE. EICAS AND STATUS MSG. ENGINE 2 FUEL VALVE, ENGINE 2 CONTROL. WITH NO ACTION ENGINE RESTARTED IN APPROX 90 SECONDS. FOUND ACTIVE FAULT 72417 PERFORMED WIRING CHECKS PER CMCS MESSAGE INDEX. REPLACED ECU NR 2 (P/N 1820M33P08) PER MM 73-21-15, PERFORMED ECU STATIC TESTED PER MM 71-00-00 TEST 11. PERFORMED ECU ACTUATOR GROUND TEST PER MM 71-00-00 TEST, ALL OK. REMOVED AND REPLACED NR 2 ENGINE HMU (P/N 441789) IAW 73-21-14/404-035-000. (M)

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