Service difficulty report · Torque Tube · Beech A100

Difficulty date
June 3, 2004
Submitted
July 22, 2004
Operation
General aviation
Make and model
Beech A100
Aircraft time
16,267 hours
Engine
Pwa PT6A28
Propeller
Mcauly 4HFR34C652
Part
Torque Tube
Part number
1156100103
Condition
Out Of Limits
Location
Elevator
Stage of operation
IN
How discovered
9
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

(CAN) DURING THE INSTALLATION OF A NEW ELEVATOR TORQUE TUBE, IT WAS NOTICED THAT ONE OF THE TAPERED PINS WAS INSTALLED BEYOND THE MANUFACTURES LIMITS. THE MM 27-30-00 PAGE 202 A, STATES IN PART THE SMALL END OF THE TAPER PIN BODY SHOULD EXTEND .000 TO 0.060 INCH BEYOND THE SURFACE OF THE SUPPORT. IF THE DIMENSIONS ARE NOT MET, NEW PARTS WILL BE REQUIRED. THE SMALL END ON THE SUBJECT TUBES EXTENDED 0.125 INCHES BEYOND THE SURFACE. A SECOND TORQUE TUBE FROM OUR STOCK WAS ALSO FOUND IN THE SAME CONDITION. BOTH TUBES WERE NEW, SUPPLIED BY THE AIRCRAFT MFG. A THIRD TUBE FROM THE SAME BATCH WAS REMOVED FROM OUR STOCK. MFG WAS CONTACTED AND THEY WILL BE INVESTIGATING THE MATTER FURTHER.

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