Service difficulty report · Fuel Line · Boeing 747422

Difficulty date
November 18, 2011
Submitted
December 8, 2011
Operation
Air carrier
Aircraft
N128UA
Make and model
Boeing 747422
Aircraft serial
30023
Aircraft time
47,011 hours, 5,587 cycles
Engine
Pwa PW4056
Part
Fuel Line
Condition
Leaking
Location
Nr 3 Engine
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 HAS FUEL LEAK OFF OF THE FUEL LINE THAT RUNS BETWEEN THE FUEL PUMP AND THE FUEL OIL COOLER. LINE RUNS NEXT TO THE ENGINE CASE. LINE HIGH TEMP WRAP IS PEELED BACK TO EXPOSE METAL BRAIDING FOR APPROX 7 INCHES. REPLACED NR 3 ENG F11 FUEL LINE.