Service difficulty report · Fuel Sys · Boeing 75724APF

Difficulty date
December 16, 2025
Submitted
December 17, 2025
Operation
Air carrier
Aircraft
N421UP
Make and model
Boeing 75724APF
Aircraft serial
25281
Aircraft time
35,656 hours, 23,265 cycles
Part
Fuel Sys
Condition
Out Of Balance
Location
Zone 600
Stage of operation
CR
How discovered
O
Nature of condition
F, J
Precautionary procedure
O

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

What was found

DURING FLIGHT FUEL TRANSFERRED FROM RH TANK TO CENTER TANK. LOOKS ABOUT 200 LBS PER HOUR. NO EXTERNAL LEAKS FOUND, OBSERVED FUEL TRANSFERS FROM RIGHT TO CENTER. DEFERRED PER AMM 28-21-00-702-001 B(2)

More about the Boeing 757-24APF