Service difficulty report · Fuel Sys · Doug MD11F

Difficulty date
October 8, 2025
Submitted
October 16, 2025
Operation
Air carrier
Aircraft
N278UP
Make and model
Doug MD11F
Aircraft serial
48577
Aircraft time
80,389 hours, 17,337 cycles
Part
Fuel Sys
Part number
2720120
Part serial
200
Condition
Out Of Balance
Location
Zone 100
Stage of operation
CL
How discovered
O
Nature of condition
J, F
Precautionary procedure
O

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

What was found

DURING CLIMB LEVEL 2 LAT FUEL UNBAL UN COMMANDED FUEL CROSS FEED FROM TANK THREE TO ENGINE 1 FUEL DECREASING IN TANK THREE AT A RATE OF BURN FOR TWO ENGINES TANK ONE INDICATING NO DECREASE IN QUANTITY OPS CHK NORMAL OF VALVE AND NO LEAKS NOTED.

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