What was found
INSPECTED THROTTLE CABLE AND DISCOVERED THAT THE CABLE IS BROKEN INSIDE THE PROTECTED SHEATHING. THE ORIGINAL MFG PN IS 455-322. THIS THROTTLE CABLE PN IS MC455-322 WHICH IS MFG UNDER A FAA/PMA APPROVED, AFTERMARKET. THIS PART WAS INSTALLED 1/6/2004 AT TOTAL TIME 7584.85. THIS PART FAILED 4/29/16 AT TOTAL TIME 9238.6. THIS PART HAS BEEN IN SERVICE FOR ABOUT 12 YEARS WITH 1653 HOURS ON IT WHICH IS NOT ALOT OF TIME/HOURS. USUALLY THE ONLY REASON FOR REPLACEMENT IS THAT THEY GET GUMMED UP WHICH MAKES THEM DIFFICULT TO ACTUATE. THE REPLACEMENTS THAT I PERFORMED WERE AFTER THEY HAD BEEN IN SERVICE FOR OVER 30 TO 40 YEARS AND SOME HAVING MORE THAN 10,000 HOURS. I HAVE THIS CABLE FOR SHIPMENT TO NTSB TO SEE IF THEY CAN DETERMINE THE CAUSE OF THIS THROTTLE CABLE FAILURE. SENT PART TO NTSB FOR ANALYSIS 5/9/16.