High Quality Content by WIKIPEDIA articles! On 22 September 1966 a Vickers Viscount departed from Mount Isa, Queensland, Australia for a 73 minute flight to Longreach. Forty-four minutes after takeoff a fire started in one of the engines. The crew were unable to extinguish the fire or feather the propeller so made an emergency descent with the intention of landing at Winton, a small town along the route. The fire spread to the fuel tank and weakened the wing structure so that a large part of the left wing broke away and the aircraft crashed. All twenty-four occupants were killed. The accident remains the fifth-worst in Australia`s civil aviation history.