As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE PILOT REPORTED FLAP CABLE BROKE DURING FLIGHT. PILOT STATED WHEN ON FULL FLAP POSITION, HE HEARD A LOUD THUMP AND AIRCRAFT STARTED TO ROLL ON RIGHT WING. PILOT NOTED RIGHT FLAP WAS ON THE 'UP' POSITION, SO HE RAISED LEFT FLAP AND LANDED SAFELY. AN INVESTIGATION REVEALED THE RIGHT OUTBOARD FLAP CABLE BROKE AT THE SWAGED END FITTING DUE TO RUST WHICH MADE IT HARD TO INSPECT. MORE ATTENTION SHOULD BE TAKEN DURING A PREFLIGHT TO CATCH THIS PROBLEM WHEN IT STARTS.