Appleton

The on-demand cargo flight departed for the destination airport and was delayed en route due to repetitive destination airport closures. The closures were the result of snow-contaminated runways. The pilot then diverted to an alternate airport due to concerns about remaining fuel reserves. The airplane experienced a loss of engine power during an instrument approach at the alternate airport and impacted the ground about 200 yards short of the landing runway. A postaccident inspection of the airplane revealed no usable fuel on board.

The pilot received numerous weather briefings/updates before takeoff, which included two pilot reports of windshear by aircraft on the approach into Appleton. Shortly after takeoff convective sigmet 1E was transmitted by the radar controller on the same frequency he was working N87163. This sigmet called for embedded thunderstorms. About 10 minutes later, while being vectored for the approach into Appleton, the pilot was given heading deviations because of weather. The aircraft crashed 1/2 mile from the approach end of the runway. A witness whose residence is located between the OM and MM for the ILS approach reported a 'huge downpour' with 'very strong winds' at the time of the accident. Wreckage examination revealed that all power controls for both engines were in the full forward position, and that the left and right main landing gear mounting trunnions were displaced upward into the wing fuel tanks. The pilot, sole on board, was killed.

The airplane was on its way from Green Bay to Oshkosh, flying at an altitude of 2,500 feet in relative good weather conditions when it collided with an Air Wisconsin De Havilland DHC-6 Twin Otter 200 registered N4043B. En route from Sheboygan to Appleton with six passengers and two pilots on board, the Twin Otter was descending to Appleton Airport. At the time of the accident, both airplanes were flying under VFR in an uncontrolled airspace. Following the collision, both aircraft crashed into Lake Winnebago, some five miles southeast of Appleton Airport. Debris were found floating on water, both airplanes were totally destroyed and all 13 occupants were killed.

Following a uneventful flight from Sheboygan, the crew started the descent to Appleton Airport in relative good weather conditions when, at an altitude of 2,500 feet, the Twin Otter collided with a North Central Airlines Convair CV-580 registered N90858. En route from Green Bay to Oshkosh, the Convair was carrying two passengers and three crew members. At the time of the accident, both airplanes were flying under VFR in an uncontrolled airspace. Following the collision, both aircraft crashed into Lake Winnebago, some five miles southeast of Appleton Airport. Debris were found floating on water, both airplanes were totally destroyed and all 13 occupants were killed.