Federal investigators blame a contaminated fuel system for a 2002 plane crash that killed an Arkansas doctor in southeast Missouri. The National Transportation Safety Board also says inadequate emergency procedures and the airspeed not maintained by pilot Anthony Junklin also contributed to the July 2002 crash. Junklin died while trying to land in a 40-acre, Bollinger County field near Marble Hill after reporting a loss of engine power. Witnesses say they heard engine noise when the Junklin-owned plane began to circle over the field. They say the engine noise stopped about midpoint through the turn.