Service difficulty report · Tank · Boeing 747422

Difficulty date
November 18, 2011
Submitted
November 23, 2011
Operation
Air carrier
Aircraft
N179UA
Make and model
Boeing 747422
Aircraft serial
25158
Aircraft time
86,101 hours, 10,451 cycles
Engine
Pwa PW4056
Part
Tank
Condition
Leaking
Location
Fuel System
Stage of operation
IN
How discovered
V
Nature of condition
K
Precautionary procedure
K

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

What was found

FOUND STANDING RESIDUAL FUEL IN PAN BELOW HORIZONTAL STAB. LOCATED FUEL LEAKING FROM RIGHT AFT LOWER SECTION OF TANK AT THE CORNER SEAM. RESEALED HST FUEL LEAK AREA. SEALANT APPLIED AT 1700, HST CAN BE FUELED AND LEAK CHECKED AT 0500 11-19-11. LEAK CHECKED OKAY.