On August 2, 1991, a Mooney M20E (registration N5819Q) operated by Todd Dreyer was involved in an aviation accident near Riverside, CA. Investigators recorded the probable cause as: THE CONTAMINATION OF FUEL IN THE RIGHT TANK OF THE ACCIDENT AIRPLANE WITH AN UNKNOWN OIL-LIKE SUBSTANCE. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A private pilot and a passenger experienced sudden engine roughness and power loss at about 400 feet during a local flight. The pilot made a 180-degree turn, extended the approach to avoid other aircraft, and landed in a field. Minor injuries and substantial damage resulted. Investigation found fuel contaminated with an oil-like substance.
Incident Details
A certificated private pilot and a passenger departed on a local area flight. Upon reaching approximately 400 feet above ground level, the engine suddenly began to run rough and lose power. The pilot executed a 180-degree turn to return to the departure airport.
Emergency Landing
While on final approach, the pilot noticed another airplane landing on the runway and a second airplane occupying the taxiway that had been planned for an emergency landing. To avoid these aircraft, the pilot extended the approach and landed in a field east of the airport. The airplane sustained substantial damage, and the occupants received minor injuries.
Post-Accident Investigation
An examination of the engine found no malfunction. However, fuel from the right fuel tank was contaminated with an undetermined amount of a lubricating oil-like substance. No engine or fuel system problems involving fuel obtained from the fuel vendor were reported.