In 1993, Denver pleaded guilty to a drunken driving charge and was placed on probation. In August 1994, while still on probation, he was again charged with misdemeanor driving under the influence after crashing his Porsche into a tree in Aspen. Though a July 1997 trial resulted in a hung jury on the second DUI charge, prosecutors later decided to reopen the case, which was closed only after Denver's accidental death in October 1997. In 1996, the FAA decided that Denver could no longer fly a plane, owing to medical disqualification for failure to abstain from alcohol, a condition that the FAA had imposed in October 1995 after his prior drunk-driving conviction.