What was found
(CAN) PILOT REPORTED AN INCREASE OF FORCE REQUIRED TO PUSH THE T/R PEDALS AT 100 PERCENT RPM WHICH EXCEEDED THE OPERATIONAL LIMITS. HOWEVER, AT ZERO RPM THE FORCE WAS NORMAL. IT WAS DETERMINED THAT THE CAUSE WAS ASSOCIATED WITH THE T/R FEATHERING BEARINGS. INSPECTION SHOWED THAT THE BEARINGS ALTHOUGH SOMEWHAT WORN DID NOT HAVE EXCESSIVE WEAR. FURTHER INSPECTION FOUND THAT ONE OF THE IB BEARINGS HAD A CRACKED INNER RACE RUNNING FULL LENGTH PARALLEL TO IT`S AXIS. THE BEARING IS THE ORIGINAL BEARING INSTALLED BY THE MFG. INSTALLATION OF NEW T/R BLADES RECTIFIED THE EXCESSIVE T/R FORCE AT 100 PERCENT RPM DEFECT. (TC NR 20071001010)