As well as VH-BSP, Burnett Airways also had BN-3, VH-BSG.
BSP was purchased to start a new Reg 203 run down to Stanthorpe and Warwick, but foggy winter weather and low loads soon sealed the fate of the company and then it went onto Bushies. So Burnett Airway became "Burntout Airways" when it shutdown in late 75 or early 76. The last I know of BSP, was in 2000 at Essenden.
I think BSG was lost near Canberra but I am unsure if that was so.
And the BN-2, I flew on "missions" to Great Keppel in 1979 was VH-SYU for Country Air, Rocky.
I recall during my endorsement by Peter Bad...y of Air Pacific fame, being shown max rate turns at just above the stall with one engine shut down.
It also flew quite well with the external aileron gust lock in, as I discovered one day.. but that is another story!