Flight and Weather
Prior to departure on a night cargo flight, the pilot received a weather briefing that included forecast rain and snow, as well as occasional moderate rime and mixed icing in precipitation and clouds along the planned route. The airplane's takeoff weight was 7,280 pounds, and its maximum gross takeoff weight was 8,750 pounds.
Inflight Icing Encounter
While cruising in instrument meteorological conditions, the airplane encountered freezing rain. The pilot observed ice on the wing de-ice boots and the windshield. He activated the airplane's anti-ice and de-ice equipment. Despite this, the airplane continued to accumulate ice, prompting the pilot to divert to another airport. The pilot reported that the airplane "felt sluggish" and that "ice had formed beyond the boots and onto the wing, but the de-ice boots were still active."
Approach and Landing
The pilot conducted the approach with no forward visibility and looked out the side window to judge the distance above the runway. He did not use any flaps during the approach, and the airspeed was maintained at 110 knots. The pilot stated he did not have time to flare the airplane. The airplane landed hard, resulting in damage to the landing gear and propeller.
Post-Accident Examination
Examination of the airplane, which included the windshield de-ice system, did not reveal any discrepancies. The airplane was equipped with a cargo pod and cargo pod boot.