Service difficulty report · Seal · Boeing 747422

Difficulty date
June 9, 2007
Submitted
June 15, 2007
Operation
Air carrier
Aircraft
N199UA
Make and model
Boeing 747422
Aircraft serial
28717
Aircraft time
39,799 hours, 4,842 cycles
Engine
Pwa PW4056
Part
Seal
Condition
Leaking
Location
Rt Wing
Stage of operation
IN
How discovered
V
Nature of condition
K
Precautionary procedure
O

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

What was found

PRIOR TO DEPARTURE FUEL SEEP EVIDENT ON RIGHT WING BETWEEN T/E FLAP CANOE FAIRINGS 7 & 8, NR 4 MAIN FUEL TANK. TANK ACCESS PANEL 2ND OUTBOARD FROM STICK 21 LOCATION. [07-31-07] REMOVED PANEL AND REPLACED SEALS. NO FURTHER LEAKS NOTED AT THIS TIME. SUSPECT VIBRATION LOOSENED FASTENERS COMBINED WITH SEAL DETERIORATION CAUSED LEAK.