Flash the Dog

A pilot and his dog crash-land on an island run by a psycho who owns a motel--and most of the locals. (imdb)

A young man and his trusty dog go up against a gang of crooks that are building a dam out of shoddy materials, which could collapse and flood the entire valley.

Daredevil flyer David flirts with a waitress. An orphan accidentally takes off in a biplane requiring an aerial rescue. The villain reports a fake robbery and turns the orphan in to welfare workers, but a loyal dog saves the day.