As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT RUDDER PEDAL WENT TO FLOOR ON TAXI OUT. FOUND FORK END SHEARED AT JAM NUT. WHEN BOLT AND CASTLE NUT WERE REMOVED, CASTLE NUT WAS EXTREMELY TIGHT AND BOLT COULD NOT ROTATE. THIS COULD BE CAUSE OF THE PROBLEM. RUDDER PEDAL NUT AND BOLT ON OTHER RUDDER PEDAL WAS LOOSE ENOUGH TO ROTATE. OTHER CAUSE COULD BE MFG DEFECT OR FOR SOME REASON THE ROD ON FORK END WAS POSSIBLY BENT.