Service difficulty report · Control Unit · Boeing 747422

Difficulty date
January 14, 2010
Submitted
January 15, 2010
Operation
Air carrier
Aircraft
N118UA
Make and model
Boeing 747422
Aircraft serial
28811
Aircraft time
43,937 hours, 5,389 cycles
Engine
Pwa PW4056
Part
Control Unit
Condition
Malfunctioned
Location
Refuel Valve
Stage of operation
IN
How discovered
9
Nature of condition
J
Precautionary procedure
K

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

What was found

NR 3 MAIN RT FUEL VALVE C-U IS FAULTY. REPLACED NR 3 MAIN TANK INBD REFUEL VALVE CONTROL UNIT IAW MM. REPLACED NR 3 MAIN TANK OTBD REFUEL VALVE CONTROL UNIT.