Pullman-Moscow

The pilot of the airplane reported that the airplane was too high during approach to the airport, and he responded by reducing the engine power to idle. When the airplane was about 40 ft above the runway, the “airspeed” aural caution sounded, and the pilot added engine power; however, the airspeed continued to decay, and the “stall” aural warning sounded. The airplane subsequently rolled left, impacted terrain alongside the left side of the runway, caught fire, and slid into the airport apron. The pilot and passengers were able to exit the airplane through the main cabin door before the airplane was destroyed by postaccident fire. The pilot reported there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

While climbing in moderate icing conditions after takeoff, pilot was cleared to 17,000' feet. Radar data showed aircraft climbed at an indicated airspeed (IAS) of 82 to 123 knots. A Beech safety info booklet stated that a minimum airspeed of 140 knots must be maintained in icing conditions. Climbing at reduced airspeed would have increased angle of attack and allowed ice to accumulate under the wings and aft of the de-icing boots. Aircraft climbed to 13,500 feet, descended momentarily to 13,300 feet, then continued climbing as airspeed decreased abruptly. After slowing to 60 knots ias at 13,700 feet, the aircraft entered a steep descending turn and accelerated to high speed (above VNE). An emergency was declared, stating the aircraft 'lost an engine.' Soon thereafter, radar contact was lost and the aircraft crashed. Pieces of empennage surfaces separated in flight and were found at remote location from the main wreckage. Both counterweights separated from the elevators. Post crash tests disclosed no mechanical evidence of engine malfunction. Low ceiling, fog, light rain, snow and icing conditions were reported in area. All six occupants were killed.

On approach to Lewiston Airport, Idaho, the pilot encountered poor weather conditions and decided to divert to Pullman-Moscow Airport. This alternate airport was closed to traffic due to poor weather conditions as well. On approach in snow falls, the pilot failed to realize his altitude was insufficient when the airplane hit a ridge located half a mile north of the airport. The aircraft was destroyed and the pilot, sole on board, was killed.