Service difficulty report · Fuel Sys · Boeing 75724APF

Difficulty date
October 28, 2025
Submitted
October 29, 2025
Operation
Air carrier
Aircraft
N438UP
Make and model
Boeing 75724APF
Aircraft serial
25469
Aircraft time
31,297 hours, 20,491 cycles
Part
Fuel Sys
Condition
Out Of Balance
Location
Zone 100
Stage of operation
CR
How discovered
O
Nature of condition
F
Precautionary procedure
A

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

What was found

IN FLIGHT RIGHT FUEL TANK WENT 3000 LBS LESS THAN LEFT. INITIALLY WHEN BALANCED RIGHT TANK DROPPED 500 LBS IN TEN MINS THEN 1200 IN 30 MINS. LANDED WITH 3800 LBS LESS IN RIGHT TANK.

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