Service difficulty report · Connector · Boeing 777222

Difficulty date
February 21, 2011
Submitted
February 24, 2011
Operation
Air carrier
Aircraft
N787UA
Make and model
Boeing 777222
Aircraft serial
26939
Aircraft time
60,525 hours, 8,987 cycles
Engine
Pwa PW4090
Part
Connector
Condition
Damaged
Location
Fuel Pressure
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

HIGH PRESSURE (HP) FUEL SHUTOFF VALVE POSITION DISAGREES WITH COMMANDED POSITION. STATUS MSG-7360211 INACTV SD MODE. MAINT MSG 73-60021 PERFORM ED WET MOTOR NOW HELP. PERFORMED WIRE CHECK FOUND HIGH RESISTANCE BETWEEN PLUG D71024P AND D71074J, CLEANED BOTH C-P RESISTANCE OK. PERFORMED WET MOTOR IAW JRH MAINT MESSAGE CLEARED. ALSO PERFORMED ENG RUN IAW JRH ALL INDICATION GOOD. FUEL FLOW GOES TO ZERO ON SHUTDOWN. DURING INSP OF NR 1 ENG FOR FUEL SHUTOFF FAULT FOUND DAMAGED WIRING LOOM W0628 AFT OF CONNECTOR D71072P ON ENGINE LT CORE. ACCOMPLISHED INSP AND FOUND INSULATION DAMAGED ON 4 WIRES OF LOOM. NO OTHER DAMAGE TO WIRES NOTED AND ACCOMPLISHED REPAIR WITH SILICONE GUIDELINE TAPE TO RESTORE TO SERVICEAB