Service difficulty report · Seal · Piper PA44180

Difficulty date
October 24, 2002
Submitted
October 24, 2002
Operation
General aviation
Aircraft
N574ER
Make and model
Piper PA44180
Aircraft serial
4496150
Aircraft time
81 hours
Part
Seal
Condition
Leaking
Location
Mlg Actuator
Part time
49 hours
Stage of operation
IN
How discovered
O
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

RIGHT MAIN GEAR ACTUATOR LEAKING AT SHAFT SEAL. ACTUATOR REPLACED. ACTUATOR PREVIOUSLY REPLACED AT 32.3 HOURS AFTT. THIS IS AN ONGOING PROBLEM WITH PIPER ACTUATOR. SO FAR ON A FLEET OF ONLY 7 PA-44 AIRCRAFT WE HAVE REPLACED 18 ACTUATORS SINCE AUGUST 2002. PIPER FACTORY HAS BEEN AWARE OF THE PROBLEM AND ARE WORKING WITH ON A NEW SEAL. WE FIND THE ACTUATOR SHAFTS HAVE BEEN LEFT WITH VERY SHARP EDGES ON THE OUTER END WHERE IT IS MACHINED. WE HAVE ALSO FOUND THE WITNESS HOLE FOR THE ROD END NOT CHAMFERED TO GET RID OF BURRS. THESE ARE TEARING UP THE SEALS. IT IS ALSO NOTED THAT THE SEALS SEEM TO BE VERY SOFT. AN ALTERNATE SEAL (O-RING) IS LISTED IN THE PARTS CATALOG.

More about the Piper PA-44-180