Service difficulty report · Shutoff Valve · Boeing 767322

Difficulty date
December 17, 2013
Submitted
December 19, 2013
Operation
Air carrier
Aircraft
N646UA
Make and model
Boeing 767322
Aircraft serial
25283
Aircraft time
93,351 hours, 14,830 cycles
Engine
Pwa PW4060
Part
Shutoff Valve
Part number
125334D2
Part serial
95068
Condition
Faulty
Location
Fuel System
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 DUE TO REPEAT GRIPES OF FUEL IMBALANCE WITH RT TANK LESS THAN LT AFTER CTR TANK FUEL IS CONSUMED. OPEN UP ASSOCIATE FUEL TANKS & INSPECT INTERNAL PLUMBING FOR ANY LEAKS. IN ADDITION, REPLACE BOTH THE RT CTR MOTIVE FLOW VLV PCN 615-0008 & RT CTR TANK DISCHARGE CHECK VLV PCN 615-0328. REPLACE CTR TANK MOTIVE VLV IAW MM 28-22-05. RT CTR DISCHARGE CHECK VLV REPLACE SEE SEQ 3512015. REPLACED BOTH FUEL CROSS FEED VLV BODIES DUE TO BYPASSING FUEL, SEE SEQUENCE 3512019 FOR DETAILS.