Accident Overview
On an unspecified date, a single-engine airplane departed Zurich Airport Runway 28 at 1134 LT, en route to Hamburg-Helmut Schmidt Airport. The aircraft carried one pilot and one passenger. After passing over the city of Konstanz at an altitude of 16,750 feet in instrument flight rules (IFR) conditions, the airplane entered an uncontrolled descent and subsequently crashed into Lake Constance (Konstanz Lake), approximately 200 metres off Mainau Island. The wreckage was located at a depth of 60 metres. Both occupants were killed.
Investigation Findings
The official investigation determined the probable cause of the accident: loss of control while cruising in instrument meteorological conditions (IMC) with strong atmospheric turbulences associated with icing conditions.