What was found
TAIL ROTOR PEDALS BINDING IN FULL LEFT PEDAL POSITION. NO BINDING AT FLIGHT IDLE, BINDING INCREASES AS ROTOR RPM INCREASE. TAIL ROTOR OUTPUT SHAFT SPLINES THAT DRIVE TAIL ROTOR SLIDING SLEEVE, PN 105-31765, EXTREMELY WORN, NO DAMAGE TO SLIDING SLEEVE DRIVE SPLINES. SUBMITTER SUSPECTED WITH INCREASE OF CENTRIFUGAL FORCE, TAIL ROTOR SLIDING SLEEVE WAS TWISTING CAUSING BINDING.