Service difficulty report · Valve · Boeing 747422

Difficulty date
December 28, 2011
Submitted
January 24, 2012
Operation
Air carrier
Aircraft
N174UA
Make and model
Boeing 747422
Aircraft serial
24381
Aircraft time
85,411 hours, 9,576 cycles
Engine
Pwa PW4056
Part
Valve
Condition
Leaking
Location
Fuel Dist
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

NR 3 ENGINE FUEL LEAK FROM INSIDE ENGINE SEEPING FROM BOTTOM OF CASE SEAM FROM BELOW HIGH PRESSURE TURBINE. NOTED AFTER PROLONGED GROUND TIME DURING 'A' CHECK. REPLACED FUEL DISTRIBUTION VALVE PER MM. IDLE RUN AND LEAKS CHECKED OK.