What was found
DURING A 100-HOUR INSPECTION, COILS FOUND CRACKED IN THE MAGS. SLICK MFG COMPANY HAS ADDRESSED THE PROBLEM WITH SERVICE LETTERS, BUT THERE ARE NO AD'S ADDRESSING THESE COILS WHICH ALLOWS OWNERS THE LEEWAY TO RESIST REPLACING THEM. SUBMITTER SUGGESTS THE BEST WAY OF PREVENTING THIS PROBLEM IS COIL REMOVAL INSPECTIONS DURING 100-HOUR OR ANNUALS AND DURING PRE-PURCHASE INSPECTIONS WHEN BUYING OR SELLING AIRCRAFT.