As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE FROM DEN TO CYS, AIRCRAFT ENCOUNTERED ICING CONDITIONS. SINCE THE PITOT HEAT SYSTEM WAS MEL'D, AIRCRAFT WAS FORCED TO RETURN TO DEN. AIRCRAFT LANDED IN DEN WITHOUT FURTHER INCIDENT. DEN MAINTENANCE PERSONNEL REPLACED THE NR 2 PITOT TUBE IAW AMM 34-11-04. CONDUCTED A STATIC LEAK CHECK IAW AMM 34-11-00. NO DEFECTS NOTED. AIRCRAFT WAS THEN RETURNED TO SERVICE.