Pilot Braden Blennerhassett made a mayday call and swiftly grounded the plane, which was not carrying any passengers."Sure enough, out of the corner of my eye, I see a little bit of movement there," he said."Lo and behold, in between the instrument panel and the dashboard, a stow away came on board and it took me a while to register that it was actually a snake."I turned [the plane] around and got it headed back towards Darwin there and said 'look, you're not going to believe this. I've got snakes on a plane'," he laughed.