Service difficulty report · Actuator · Pilats PC1247

Difficulty date
January 28, 2025
Submitted
January 28, 2025
Operation
Air carrier
Aircraft
N687QD
Make and model
Pilats PC1247
Aircraft serial
687
Aircraft time
19,183 hours, 20,240 cycles
Part
Actuator
Part number
9603001105
Part serial
2911H
Condition
Failed
Location
Zone 700
Part time
294 hours
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

THE AIRCRAFT WAS MOVED TO MAINTENANCE FOR A RIGHT MAIN LANDING GEAR ACTUATOR INDICATION PROBLEM, IT WAS DETERMINED THAT THE PROBLEM WAS INTERNAL TO THE ACTUATOR AND A REPLACEMENT ACTUATOR WAS ORDERED. DURING REMOVAL OF THE FAILED ACTUATOR, THE TECHNICIAN NOTICED THAT THE ROTATIONAL BEARING ON THE ACTUATOR THAT WAS BEING REMOVED WAS NO LONGER SECURE IN THE ACTUATOR CYLINDER HOUSING AT THE WING ATTACHING LOCATION. THE BEARING IS SECURED USING A SWAGED ATTACHMENT PROCESS IN THE CYLINDER HOUSING. THE BEARING FELL OUT OF THE CYLINDER HOUSING END AND WITH A CLOSER LOOK IT WAS NOTED THAT THE SWAGE ON ONE SIDE OF THE BEARING WAS MORE PRONOUNCED THEN THE OTHER. AT THIS POINT THE REPLACEMENT ACTUATOR WAS BEING REVIEWED PRIOR TO THE INSTALLATION, IT WAS OBSERVED THAT THE OVERHAULED REPLACEMENT ACTUATOR HAD A LOOSE OUTER BEARING HOUSING AT THE PISTON SHAFT END WHICH IS EASILY ROTATED BY HAND WITHIN THE ROD END, THIS IS ALSO SECURED USING A SWAGING PROCESS. WE HAVE CONTACTED EATON AEROSPACE GROUP WITH THE PROBLEM AND REQUESTED A REPLACEMENT ACTUATOR.