Service difficulty report · Torque Tube · Piper PA34220T

Difficulty date
March 24, 2017
Submitted
March 24, 2017
Operation
General aviation
Make and model
Piper PA34220T
Aircraft serial
3449435
Aircraft time
460 hours, 866 cycles
Part
Torque Tube
Part number
400672
Condition
Out Of Position
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

DURING INSPECTION OF THE AIRPLANE, AFTER REPAIR, DISCOVER THAT THE BOLT WAS DAMAGED RIGHT CHANNEL TUNNEL AGAIN. AFTER ISSUE ANALYSIS AT THE AIRPLANE, DISCOVER THAT THE TORQUE TUBE HAD AXIAL DISPLACEMENT. WHEN TORQUE TUBE IS IN RIGHT END PIER POSITION THE BOLT DAMAGED THE RIGHT CHANNEL TUNNEL. WHEN TORQUE TUBE IS IN LEFT END PIER POSITION THERE IS MORE THAN ADEQUATE CLEARANCE BETWEEN THE BOLT AND STRUCTURE. TORQUE TUBE AXIAL DISPLACEMENT IS UNDER 5 MM. ACCORDING TO THE MM, A WASHER IS REQUIRED ON EACH END OF THE TORQUE TUBE. BUT IN THE PARTS CATALOG IT IS NOT ILLUSTRATED. THERE IS NO WASHER ON OUR AIRPLANE.

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