What was found
UPON DISASSEMBLY OF THE LT MAGNETO FOR RECOMMENDED SLICK 500 HR. MAGNETO INSP, FOUND THE DISTRIBUTOR BRUSH BADLY WORN AND ABOUT TO BREAK OFF. WEAR IS EXACTLY AS DESCRIBED IN SB3-08A FIG 1, ALTHOUGH MUCH MORE EXTREME. THIS MAGNETO SN AND MFG DATE ARE WELL OUTSIDE OF THE AFFECTED APPLICABILITY RANGE AS LISTED BY THE SB AND THE INSTALLED BRUSH HAD NEVER BEEN REPLACED SINCE MFG, ALTHOUGH IT HAD BEEN INSPECTED AT THE LAST 500 HR MAGNETO INSP, 469.6 HRS. AGO WITH NO DEFECTS NOTED. THE OTHER MAGNETO ON THIS SAME ENGINE EXHIBITED SIMILAR WEAR SIGNS AND WAS ALSO UNAFFECTED ACCORDING TO THE SB. THE MFG HAS PREVIOUSLY BEEN CONTACTED IN REGARDS TO ABNORMAL BRUSH WEAR IN OTHER MAGNETOS OUTSIDE THE SB AFFECTIVITY RANGE, AND APPARENTLY DOES NOT CARE.