As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED RUDDER FROZEN IN FLIGHT, UNEVENTFUL LANDING MADE. PILOT REPORTED THE RUDDER BROKE FREE WHILE TAXING REMOVED CARGO COMPARTMENT FLOOR AT CARGO DOOR AND OBSERVED WATER FROZEN AROUND RUDDER CABLE PULLEYS AT FUSELAGE STATION 495. REMOVED WATER AFTER THAWING. ADDITIONAL PRESSURE DRAINS WERE INSTALLED. THIS IS THE THIRD INCIDENT OF THIS NATURE ON THIS AIRCRAFT TYPE THAT WE HAVE EXPERIENCED. (K)