As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTING FROM MSS. CREW CLIMBED THROUGH INCING CONDITIONS AND FOUND TAIL DE-ICE TO BE INOP. IN BOTH MODES. THEY DIVERTED TO DUJ. UNDER A DISPATCH DECLARED EMERGENCY AND LANDED SAFELY WITH NOT FURTHER INCIDENTS.CORRECTIVE ACTION THAT WAS TAKEN IS R&R'D TAIL DE-ICE PRESSURE SWITCH. PERFORMED GRND RUN. OPS CK GOOD. P/N 129-384009-1