Quite the unusual aircraft and almost exclusively only found in Australia & New Zealand as an Ag Plane. It was manufactured by the Transavia Corporation from 1966 – 1993 with 118 examples built.
The common way anyone in the US or Europe would likely know about this aircraft is from 1985’s Mad Max Beyond Thunder Dome piloted by Jedediah (played by Bruce Spence). For the longest time I thought something this Bizarre was just made up with some real good special effects, but no its real.
Very interesting to see what people and companies will cook up when not bound by local technical Dogma.
RC models are very rare (nothing yet on Outerzone) but some custom one offs can be found, one of the few kits available is from Laser Design Services and can be found at: