Ansett ANA Flight 149Thursday September 22, 1966
About 150 miles from Longreach, fire was reported in No. 1 and 2 engines. While the plane was making an emergency descent, the left wing broke away due to weakening by the fire. After failure of the wing, the plane broke up in mid-air and crashed. Loosened bolts led to the loss of the oil lubricating unit causing the bearings to heat and catching the engines on fire. Subsequently, a locking mechanism was installed on the bolts to prevent any future accidents of this kind.