An update on this, the aircraft has been located. The pilot was Barry Hempels of Hempels Aviation who have a training facility at Archerfield.
Crashed Yak Located
Also, in other local news up here, an aircraft crashed at Watts Bridge yesterday morning resulting in a further two fatalities. A truly most unfortunate weekend for aviation here in SE Qld.
Motor Glider crash at Watts Bridge
RIP lads.