down3gr33ns
Here is a Westernair timetable from 1969.
Westernair Timetable
Around that time they were operating Cessna 310D VH-WAN, Aztec VH-WAB and the Beagle 206 VH-UNL on third level services out of Brisbane. They were swallowed up by the Jetair juggernaut and that was the end of them.