19990110009389A

(.19)On January 10, 1999, at 1807 central standard time, a Beech 18, N165ZA, piloed by a commercial pilot, was subtantially damaged when it departed the right edge or runway 35 (6,000' x 100' patch snow covered concrete) at the Rosecrans Memorial Airport, st. Joseph, Missouri, during its landing roll and nosed over. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR part 91 demonstration flight was not operating on a flight plan. Both pilots reported no injuries. The flight departed st. Joseph, Missouri, exact time unknown. According to the pilot-in command, he was showing a landing to the second pilot. He said the airplane began drifting to the runway's right edge when the tailwheel contacted the runway. He said the airplane went through snow that was about 8 to 12-inches deep for about 500-FET before it nosed over. (.4) the twin-engine airplane began to drift to the right during its landing roll on a 150 foot wide runway that was covered with patchy snow. The pilot said when he applied power to the right engine it did not respond as he had anticipated. He said he lifted the tail wheel off the runway with the I ntent of executing a go around. The pilot said that by the time the tail was in the air the airplane had exited the right edge of the runway. He said that snow was coming over the airplane's nose. The pilot said that while the snow was coming over the airplane's nose its engines were hesitating. The airplane's drift angle exited the runway edge at an approximate 45 degree angle into snow that was between 8 and 12 inches deep. The airplane's tire tracks paralleled the runway edge for about 400 feet. At that point the airplane nosed down and skidded about 25 feet more. Packed snow was observed in both engines' air intakes.