What was found
THE IMPULSE COUPLING HAS LOOSE IVETS THAT ARE SAFELY OF FLIGHT CONCERN IF THE COME OUT DURING OPERATION. CHAMPION AEROSPACE HAS A SERVICE BULLETIN SB219A THAT LISTS AN INSPECTION PROCEDURE AND A SERIAL RANGE OF MAGNETOS TO LOOK FOR THAT MAY HAVE LOOSE IMPULSE COUPLING RIVETS. THIS MAGNETO IS OUTSIDE THE SERIAL RANGE NEEDS TO BE EXPANDED TO COVER A LARGER SERIAL RANGE OF MAGENTOS.