Service difficulty report · Garlock Seal · Boeing 747422

Difficulty date
January 28, 2016
Submitted
February 3, 2016
Operation
Air carrier
Aircraft
N119UA
Make and model
Boeing 747422
Aircraft serial
28812
Aircraft time
69,203 hours, 7,791 cycles
Engine
Pwa PW4056
Engine time
43,052 cycles
Part
Garlock Seal
Condition
Defective
Location
Nr 3 Engine
Stage of operation
CL
How discovered
O
Nature of condition
K
Precautionary procedure
E, A

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

What was found

CREW REPORTS NR 3 ENG OIL QTY DECREASING AFTER TAKEOFF, DROPPED TO ZERO & OIL PRESS WAS STEADILY DECREASING. THE ENG WAS SHUT DOWN BY THE FLIGHT CREW WHEN THE OIL PRESS DROPPED BELOW 95 PSI. THE ENG WIND MILLED FOR APPROX 90 MINUTES WITH POSITIVE OIL PRESS. FUEL PUMP & IDG GARLOCK SEALS REPLACED, HIGH POWER LEAK CHECK ACCOMPLISHED.