Service difficulty report · Relay · Boeing 777222

Difficulty date
October 18, 2011
Submitted
November 11, 2011
Operation
Air carrier
Aircraft
N220UA
Make and model
Boeing 777222
Aircraft serial
30223
Aircraft time
43,621 hours, 5,393 cycles
Engine
Pwa PW40903
Part
Relay
Condition
Failed
Location
Engine Fuel
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

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

What was found

RIGHT ENGINE HIGH PRESSURE FUEL SHUTOFF VALVE (HPSOV) OR RIGHT SPAR FUEL VALVE POSITION DISAGREES WITH COMMANDED POSITION. RT ENG SHUTDOWN ABNORMAL AFTER FUEL CONTROL SWITCH TO OFF, FUEL FLOW VARIED. REMOVED & REPLACED MAIN FUEL PUMP FILTER. FOUND FILTER CLEAN. REPLACED RELAYS K76204 AND K76207. RAN ENGINE AND HAD A NORMAL SHUTDOWN. NO FUEL LEAKS.