Service difficulty report · Actuator · Boeing 777222

Difficulty date
March 9, 2013
Submitted
April 12, 2013
Operation
Air carrier
Aircraft
N772UA
Make and model
Boeing 777222
Aircraft serial
26930
Aircraft time
70,427 hours, 12,606 cycles
Engine
Pwa PW4077
Part
Actuator
Condition
Leaking
Location
Hyd System
Stage of operation
LD
How discovered
O
Nature of condition
K, J
Precautionary procedure
O

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

What was found

LEFT HYDRAULIC SYSTEM SHOWED 60 PERCENT ON TD. FOUND HYD FLUID LEAKING FROM RUDDER MID PCU DYNAMIC SEAL MORE THAN NORMAL LIMIT BUT LESS THAN DISPATCH LIMIT PER AMM, WITH SYSTEM PRESSURIZED. LEFT HYD SYSTEM SERVICED TO FULL. ACFT CONTINUES TO SERVICE MAXIMUM 75 FLT HRS. CURRENT PTT IS 70427. REMOVED AND REPLACED LEFT SYSTEM ACTUATOR PER AMM