BOMBARDIER CL600-2B19Air Wisconsin Airlines

The copilot's failure to maintain control of the airplane during the landing and the captain's delay in initiating remedial action. Factors contributing to the accident were the low ceiling and low visibility due to fog, and the aircraft's deviation from expected performance due to airframe icing.

the first officer's failure to maintain proper glide slope during the landing approach, and the captain's failure to adequately monitor the approach and landing, and his failure to challenge and/or intervene when the first officer continued to descend below the glide slope. Factors contributing to the incident were the first officer's lack of recent experience in flying a complete ILS approach in actual instrument conditions, the low ceilings and fog.

The crew's failure to properly monitor the airplane's altitude, which resulted in the captain's inadvertent descent of the airplane into water. Contributing to the accident were the foggy weather conditions, and the captain's decision to descend below the decision height without sufficient visual cues.

The captain's attempt to recover from an unstabilized approach by transferring airplane control at low altitude instead of performing a go-around. Contributing to the accident was the captain's failure to comply with standard operating procedures.

The incident was caused by the air traffic controller assigning an altitude below the published procedure altitude for the approach segment to be flown prior to the aircraft being established on a published portion of the approach. Contributing to the incident was the flight crew's failure to identify the appropriate altitude for the segment of the approach being flown and query the controller before subsequent decent below the published minimum altitude.