Service difficulty report · Transfer Valve · Boeing 747422

Difficulty date
May 5, 2009
Submitted
May 8, 2009
Operation
Air carrier
Aircraft
N171UA
Make and model
Boeing 747422
Aircraft serial
24322
Aircraft time
75,020 hours, 8,991 cycles
Engine
Pwa PW4056
Part
Transfer Valve
Part number
40885
Part serial
375
Condition
Failed
Location
Nr 3
Stage of operation
CR
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

FUEL IMBALANCE MAIN 2-3. REPLACED NR 3 FUEL JETTISON TRANSFER VALVE BODY AND ACTUATOR. ACCOMPLISHED JETT TRANSFER VALVE GROUND TEST AND JETT TRANSFER VALVE-FUEL TRANSFER OPERATIONAL TEST. OPS CHECKED OKAY.