What was found
YOKE WAS ABOUT 10 DEGREES TO THE LEFT DURING LEVEL FLIGHT. PILOT REQUESTED AN ADJUSTMENT. AN ATTEMPT WAS MADE TO ADJUST CABLES, WHEN PLASTIC COVER WAS REMOVED BEHIND INSTRUMENT PANEL, THE ROD END THAT SCREWED INTO TURNBUCKLE WAS BROKEN AND THE AILERONS WERE OPERATING WITH A SINGLE STRAND OF SAFETY WIRE, 041 INCH.