First Australian Flying Boat Makes Test Flight - Captain G.U. Allan, at the controls of the "Coolangatta" during today's preparations for next Friday's flight to Australia from Southampton, England."Coolangatta" first of six Australian flying boats which are to operate with imperial Airways on the empire trunk route, was out today here preparing for its departure to Australia on Friday next, to inaugurate a new Southampton - Sydney Service. March 4, 1938. (Photo by Associated Press Photo).