As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE UPPER RUDDER SPAR WAS BROKEN 12.5 INCHES ABOVE THE UPPER HINGE. IN ADDITION, THE SPAR CRACKED UNDER THE UPPER HINGE FITTINGS. THIS CAUSED THE RUDDER COUNTER BALANCE TO BE LOOSE RESULTING IN RUDDER FLUTTER. FURTHER FLIGHT COULD HAVE RESULTED IN LOSS OF RUDDER CONTROL. THE SPAR WEB IS MADE OF .040 INCH ALUMINUM CHANNEL WITH VERY LITTLE IN THE WAY OF STIFFNERS. THE SPAR NEEDS TO BE BEEFED UP. (K)