What was found
FSDO SENT INFO LETTER TO ALL IA`S IN DISTRICT REGARDING TURNBUCKLES CRACKING AT ENDS THUS LOOSING STRUCTURAL INTEGRITY OF TURNBUCKLE ON PRIMARY FLT CONTROLS AS A RESULT OF SURVEILIANCE CONDUCTED IN DISTRICT, DISCOVERING PROBLEM. AS A RESULT OF LETTER MECHANIC GAVE OFFICE AFTER OFFICE SENT OUT LETTER REGARDING TURNBUCKLES AND AFTER AC WAS INSPECTED. TURNBUCKLE WAS INSTALLED ON AN AILERON CONTROL CABLE. THIS TURNBUCKLE HAS NO V NOTCH ALLOWING FOR CLIPS TO BE USED. RECOMMEND AD BE IMPLEMENTED MANDATING REPLACEMENT OF ALL TURNBUCKLES THAT DO NOT HAVE A DATE ON THEM. DOCUMENT RECOMMENDS THE ACTION OF NOT REUSING TURNBUCKLES W/DATE OF 1978 OR PRIOR. MS21251M AND PHOTO OF TURNBUCKLE MFG IN APPROX 1952.(K)