Service difficulty report · Fuel Tank · Boeing 75724APF

Difficulty date
December 16, 2025
Submitted
December 18, 2025
Operation
Air carrier
Aircraft
N421UP
Make and model
Boeing 75724APF
Aircraft serial
25281
Aircraft time
35,657 hours, 23,266 cycles
Part
Fuel Tank
Part number
125334D2
Part serial
AA135255
Condition
Inoperative
Location
Right
Stage of operation
CR
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

**SUPPLEMENTAL SDR** DURING FLIGHT FUEL TRANSFERRED FROM RH TANK TO CENTER TANK. LOOKS ABOUT 200 LBS PER HOUR. REMOVED AND REPLACED RH DEFUEL VALVE REF. UPS B757 AMM 28-26-01-004-144 AND 28-26-01-404-145. COMPLETED DEFUEL VALUE INSTALLATION WITH ADJUSTMENT LEAK CHECK REF AMM 28-26-01-790-801 OPS CHECKS GOOD.

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