Before Aeropelican moved out of Belmont they had a P2 (rear stair) Bandit hulk stored outside, I think it may have been used as a source of spares for the Bandit they were running at the time. If I recall correctly the airframe was acquired from Transtate in Cairns and arrived at Belmont on the back of a truck.
Good possibility that the airframe used is the one mentioned above and the scene was filmed on Stockton Beach north of Newcastle.