What was found
PILOT'S CONTROL WHEEL SHAFT PICKED UP WIRE BUNDLE WHERE IT RUNS UNDER THE SHAFT. THIS PINCHED THE BEACON WIRE BREAKING THROUGH THE INSULATION AND BURNING THE WIRE IN HALF.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PILOT'S CONTROL WHEEL SHAFT PICKED UP WIRE BUNDLE WHERE IT RUNS UNDER THE SHAFT. THIS PINCHED THE BEACON WIRE BREAKING THROUGH THE INSULATION AND BURNING THE WIRE IN HALF.