As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH COILS IN THIS DUAL MAG HAVE CRACKS IN POTTING COMPOUND EXPOSING COIL WINDINGS AND LEAKING HIGH TENSION VOLTAGE. BOTH COILS ARE ELECTROSYSTEMS MANUFACTURED COILS. HAVE SEEN OTHER ELECTRICAL SYSTEM COILS WITH SIMILAR CRACKS. DOES NOT SEEM TO OCCUR WITH BENDIX/TCM COILS. THESE CRACKS COULD RESULT IN A 'DEAD' MAG.