Service difficulty report · Bypass Valve · Boeing 767324

Difficulty date
November 1, 2015
Submitted
November 3, 2015
Operation
Air carrier
Aircraft
N645GT
Make and model
Boeing 767324
Aircraft serial
27393
Aircraft time
86,347 hours, 16,347 cycles
Part
Bypass Valve
Part number
5006151A
Part serial
TLS19802
Condition
Malfunctioned
Location
Fuel System
Stage of operation
IN
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

DUE TO FUEL IMBALANCES FROM LT TANK TO RT TANK IN FLIGHT, RT MAIN TANK TROUBLE SHOT IAW 28-11-01 REQUIRED & WO 11148. WO 11148 COMPLIED WITH FOR LT TANK TO RT TANK FUEL MIGRATION. THE FOLLOWING ACTIONS WERE ALSO PERFORMED, LP 550787 M16, R & R RT MAIN TANK FUEL BOOST PUMP BYPASS VLV IAW MM 28-22-04. OPERATIONS CHECK COMPLIED WITH. LP 550787 M17, R & R MAIN TANK FLOAT OPERATED SOV IAW MM 28-22-10. OPERATIONS CHECK COMPLIED WITH. LP 550788 M19, R & R CHECK VLV BOOST PUMP BYPASS IAW MM 28-22-04. OPERATIONS CHECK COMPLIED WITH.