Incident Overview
A cross-country flight ended in a crash after the pilot encountered severe to moderate icing conditions. The weather, which included icing, had been forecast for the intended route and was issued in a SIGMET, but it was not provided to the pilot during the initial weather briefing.
En Route Events
While en route, air traffic control (ATC) offered the pilot opportunities to change his destination and land. The pilot, however, elected to continue the flight as planned. Subsequently, he encountered icing conditions and the aircraft crashed.
Weather Briefing
The SIGMET that covered the route was not communicated to the pilot during his initial weather briefing, leaving him without that specific warning at the start of the flight. The source does not specify whether the pilot received any updated briefing or weather information while airborne beyond ATC's suggested diversions.