Service difficulty report · Actuator · Boeing 747422

Difficulty date
December 25, 2011
Submitted
January 9, 2012
Operation
Air carrier
Aircraft
N117UA
Make and model
Boeing 747422
Aircraft serial
28810
Aircraft time
52,927 hours, 6,414 cycles
Engine
Pwa PW4056
Part
Actuator
Part number
3860061102
Part serial
99
Condition
Leaking
Location
Rudder
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

HYDRAULIC LEAK FROM TAIL AREA. FOUND LOWER RUDDER ACTUATOR UNIT ON UPPER RUDDER LEAKING FROM STRUT ROD. REPLACED RUDDER LWR ACTUATOR PER MM.OPS CHECKED GOOD. NO LEAKS NOTED.