What was found
OBVIOUS VIBRATION HAPPENED AT TAKEOFF, THE PLANE LANDED TO INSPECT. LOOSENED BUSHING IN THE DISTRIBUTOR WAS FOUND AFTER DISASSEMBLING THE MAGNETO.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
OBVIOUS VIBRATION HAPPENED AT TAKEOFF, THE PLANE LANDED TO INSPECT. LOOSENED BUSHING IN THE DISTRIBUTOR WAS FOUND AFTER DISASSEMBLING THE MAGNETO.