As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SLICK BY CHAMPION SB2-19A MANDATORY INSPECTION OF IMPULSE COUPLING. THE SB HAS YOU INSPECT THE IMPULSE COUPLING PER THE MAINTENANCE MANUAL. IF ANY MOVEMENT IS FOUND IN THE RIVETS, THE IMPULSE COUPLING MUST BE REJECTED. MAGNETO INSTALLED WITH TSN 0.0 AT AN AIRCRAFT TOTAL TIME 6000.1 AND ENGINE TSN/TSO 4478.5/0.0 INSPECTED MAGNETO MODEL NO. 6351 P/N: 66LC35SDNN S/N: 18031066 TSN: 167.0 INSTALLED IN THE RH POSITION AND FOUND RIVETS LOOSE. THIS IMPULSE COUPLING FAILED THE INSPECTION AND IS NO LONGER SERVICEABLE.