As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A POST ACFT ACCIDENT ENGINE TEARDOWN IT WAS NOTED THAT THE RT MAGNETO FIRED ERRATICALLY BELOW 1400 RPM. FURTHER INVESTIGATION REVEALED THAT THE DISTRIBUTOR GEAR WAS LOOSE AND THE ROTOR GEAR WAS LOOSE. PILOT REPORTED LOSS OF POWER ON TAKEOFF.