Service difficulty report · Shutoff Valve · Boeing 7377H4

Difficulty date
August 15, 2019
Submitted
September 30, 2019
Operation
Air carrier
Aircraft
N936WN
Make and model
Boeing 7377H4
Aircraft serial
36643
Aircraft time
35,403 hours, 21,265 cycles
Part
Shutoff Valve
Part number
2670136
Part serial
18860
Condition
Faulted
Location
Rt Wing Fuel
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

FUEL FROM RIGHT MAIN TANK TRANSFERRED INTO CENTER TANK (CENTER PUMPS OFF, CROSSFEED CLOSED), 1600 LBS. IMBALANCE - RIGHT MAIN LOW, 1600 IN CENTER TANK. ABLE TO BURN DOWN CENTER TANK WITH PUMPS IN BUT WITH CENTER PUMPS OFF, RH MAINS OFF, CROSSFEED OPEN, FUEL STILL TRANSFERS FROM RIGHT MAIN INTO CENTER TANK. R&R NR 2 FUELING SHUT OFF VALVE PER AMM.

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