Cessna C206, VH-RDR, Wilton (Authorised Landing Area) NSW, 18 February 1990

The aircraft was refuelled after having stood in the open for several very wet weeks. Pre-flight and water sump drain inspections were conducted by the pilot and appeared to be normal. Engine start and pre-take off checks also appeared normal. Just as the aircraft became airborne the engine power diminished dramatically and the pilot elected to land straight ahead. The aircraft subsequently ran off the airstrip into rough terrain. The nosewheel, firewall and propeller were damaged. Subsequent inspection of the fuel system found that the system contained pure water between the fuel tanks and engine.