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N448DM accident description

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Tail numberN448DM
Accident dateJune 07, 2009
Aircraft typeGulfstream American Corp AA-5B
LocationHumbird, WI
Near 44.520556 N, -91.000556 W
Additional details: None

NTSB description

On June 7, 2009, about 1745 central daylight time (cdt), a Gulfstream American Corporation model AA-5B (Tiger), N448DM, owned and operated by a non-instrument rated private pilot, was destroyed during impact with terrain near Humbird, Wisconsin. Instrument meteorological conditions prevailed at altitude with marginal visual meteorological conditions reported at the surface. The personal flight was being operated under the provisions of 14 Code of Federal Regulations (CFR) Part 91 without a flight plan. The pilot and his passenger were fatally injured. The flight departed at 1643 cdt from Lake Elmo Airport (21D), near St. Paul, Minnesota, and was en route to Sheboygan County Memorial Airport (KSBM), near Sheboygan, Wisconsin.

According to aircraft radar track data, there was only one visual flight rule (VFR) beacon track that originated from 21D within the 1-hour period before the accident. This radar track began at 1643:31 cdt and continued to the south-southeast between 1,900 and 2,000 feet mean sea level (msl). The last radar return was recorded at 1708:18 cdt over Durand, Wisconsin, at an altitude of 1,900 feet msl. The last radar return was about 42.6 nautical miles (nm) west of the accident site.

Several witnesses located near the accident site reported hearing, but not seeing, an airplane overfly their position. One witness reported hearing the sound of an aircraft engine increase and decrease in rapid succession prior to hearing a sound consistent with an impact. The witness also reported that it was raining and the ground visibility was limited due to fog. Local law enforcement and property owners immediately commenced a search for the accident site, which was subsequently located about 2045 cdt.

The closest weather reporting facility was at Chippewa Valley Regional Airport (KEAU), Eau Claire, Wisconsin, located about 30 nm northwest of the accident site. The airport was equipped with an automated surface observing system (ASOS).

At 1756 cdt, the KEAU ASOS reported the following weather conditions: Wind 090 degrees true at 9 knots; visibility 10 miles; overcast ceiling at 1,700 feet above ground level (agl); temperature 12 degrees Celsius; dew point 8 degrees Celsius; altimeter setting 29.96 inches of mercury.

(c) 2009-2011 Lee C. Baker. For informational purposes only.