Approach and Landing
During the approach, the first officer (FO) asked the captain if he wanted to activate the wing de-icing system. The captain responded that the aircraft was going to the hangar and that he would run the de-icing boots on the ground. The FO then reduced power over the runway threshold, causing the sink rate to increase. The captain observed a sink rate of 900 feet per minute. The FO applied additional back pressure on the control yoke, but it was insufficient to stop the descent. Further back pressure was applied, and the stall warning horn sounded. Shortly thereafter, the captain announced, "I got it."
Hard Landing and Damage
The aircraft made a hard landing. The right main landing gear broke as a result. The fuel tank ruptured, and the right wing rear spar was bent upward. No other details about injuries or evacuation were provided.
Post-Accident Inspection
Approximately 18 hours after the accident, a layer of mixed rime and clear ice measuring 3/16 inch thick was observed on the leading edges of the wing, horizontal stabilizer, and vertical stabilizer. The ice had finger-like protrusions oriented vertically to the wing surfaces.
Operator Procedures and Training
The company's line operations manual does not include information on flight characteristics or landing techniques specific to wing ice. Additionally, neither pilot had received the company's current crew resource management (CRM) training.