Keep 'Em Flying (1941)

When a barnstorming stunt pilot decides to join the air corps, his two goofball assistants decide to go with him. Since the two are Abbott & Costello, the air corps doesn't know what it's in for.

Directed by: Arthur Lubin, Ralph Ceder

Starring: Bud Abbott, Lou Costello, Martha Raye, Carol Bruce, William Gargan, Dick Foran

Links: IMDb, Movie posters, Movie stills