Service difficulty report · Torque Tube · Piper PA31350

Difficulty date
January 2, 2004
Submitted
March 1, 2004
Operation
General aviation
Make and model
Piper PA31350
Aircraft time
7,105 hours
Engine
Lyc TIO540J2BD
Propeller
Hartzl HCE3YR2A
Part
Torque Tube
Part number
4004009
Condition
Corroded
Location
Rudder
Component
Rudder Assy
Component part number
4004638
Stage of operation
IN
How discovered
O
Nature of condition
F
Precautionary procedure
K

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

What was found

(CAN) WHILE COMPLYING WITH AD 2003-24-07, FOUND SURFACE CORROSION OF RUDDER TORQUE TUBE (VISUAL INSPECTION OF RUDDER INTERNAL STRUCTURE MFG SB NR 1105A. REMOVED TORQUE TUBE AND FOUND AREA TO BE INSPECTED IAW AD REPAIRABLE BUT FOUND THAT THE INTERNAL TORQUE TUBE CORROSION SEVERE AND METAL/OXIDE FALLING OFF TORQUE TUBE INTERNAL WALLS. (NOT MENTIONED BY AD). RUDDER ALUMINUM RIBS TO STEEL TORQUE TUBE CORROSION ALSO NOTED.

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