David MacDonald: David MacDonald. Director: The Flying Doctor. Scottish-born David MacDonald got his training in the industry in the United States under celebrated producer and director Cecil B. DeMille, who hired him in 1929 as a production assistant. MacDonald returned to Britain in 1936 after his apprenticeship and directed a dozen of "quota quickies", films that were made quickly and cheaply to fulfill a British government requirement that a certain percentage of...