What was found
THE PILOT REPORTED THAT ON FINAL APPROACH, THE LT TAIL ROTOR PEDAL BECAME STUCK, AND THE ACFT BEGAN FLYING TO THE RIGHT. DECIDED TO ABORT APPROACH, COULD NOT GAIN CONTROL TO LAND AT DESTINATION. DECLARED AN EMERGENCY, AND AFTER 20 SECONDS, PEDAL MOVEMENT RESTORED. WAS CLEARED AND LANDED SUCCESSFULLY WITH NO FURTHER ISSUES. AFTER INSPECTION, IDENTIFIED THAT THE BALL JOINT (REAR OF FLEX BALL CABLE) WAS STIFF AND BINDING. NOTICED A LARGE AMOUNT OF CORROSION AND PITTING ON THE BALL SURFACE.