What was found
RUDDER PEDAL LOST VERTICAL STABILTY AND THE INSTRUCTOR PILOT REPORTED THE PROBLEM TO MAINTENANCE. MAINTENANCE INSPECTED THE AREA AND FOUND THE SAFETY RING,WHICH HOLDS THE RUDDER PEDAL ATTACH SHAFT TO THE FUSELAGE FITTING, MISSING. AN INSPECTION WAS MADE TO FIND THE RING, AND DETERMINED IT WAS NOT IN THE AIRCRAFT. MAINTENANCE QUESTIONED IF IT WAS INSTALLED AT THE FACTORY, WHICH INITIATED A FLEET WIDE ONE TIME INSPECTION. TWO MORE AIRCRAFT WERE FOUND TO BE MISSING THE SAFETY RINGS.THESE ARE NEW AIRCRAFT WITH LESS THAN A HUNDRED HOURS TIME IN SERVICE.