Service difficulty report · Fuel Sys · Boeing 75724APF

Difficulty date
April 30, 2026
Submitted
May 4, 2026
Operation
Air carrier
Aircraft
N447UP
Make and model
Boeing 75724APF
Aircraft serial
27736
Aircraft time
36,873 hours, 20,976 cycles
Part
Fuel Sys
Condition
Out Of Balance
Location
Lt & Rt Cells
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

SUSPECT INTERNAL FUEL LEAK. OBSERVED 1900 LB FUEL IMBALANCE BETWEEN L+R FUEL TANKS DEVELOP OVER 1:49 FLIGHT TIME. FINAL LANDING FUEL L TANK 6.1 / C TANK 0.0 / R TANK 4.2 TOTALIZER AND FMC CALC BOTH - REF BARCODE T3F18E008RT44 FOR LH FUEL SOV ACTUATOR R&R OPS CK GOOD NO OTHER DEFECTS NOTED. TURNED ON ALL PUMPS IN LH AND RH MAIN TANKS REF AMM 28-26-00, NO FUEL IMBALANCE AT THIS TIME. THIS CLEARS DEFERRAL

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