Hop Harrigan America's Ace of the Airways

Hop Harrigan (William Bakewell) and his pal "Tank" Tinker (Sumner Getchell)operate a small airport and flying service, and are hired by J. Westly Arnold (Emmett Vogan) to fly an eccentric inventor, Dr. Tabor (John Merton), to his secret laboratory where he has a revolutionary new power unit. But a mysterious character known as The Chief Pilot (Wheeler Oakman)is interested in the invention and uses a destroying ray to cripple Hop's airplane and kidnap Tabor. Hop and "Tank", aided by Gail Nolan (Jennifer Holt and her kid brother, Jackie (Robert 'Buzz' Henry), finally overcome the villains... and, then, Tabor goes mad and decides to blow up the world. There is still work to be done. - IMDb