Reviewers noted that the Arctic mapping flight in the movie was very similar to the trans-world flight of Howard Hughes, which he completed shortly before the preview screening.
Airplanes in order of their appearance include a Northrop Gamma 2D-2 (s/n 12, NC2111); American Airlines' Douglas DST-217 "Flagship Washington" (s/n 1976, N18144) [note: door is on right side vs traditional left - an AA specification]; a Ryan ST-A (NC16039); a Fairchild 24C-8C (NC15346), the Lockheed 12A Electra Junior (c/n 1207, NC58Y), the Lockheed Sirius 8A (s/n 151, NC117W); and in the final scene, a Stinson SR 9.
Airport scenes at Grand Central Air Terminal, Glendale, Ca. The aeronautics school there was the Curtis-Wright Aeronautical Institute.
The school in the film is Trans-World but TWA, at the time represented Transcontinental & Western Air. The school name is fictional but represents Curtis-Wright.
The second of three films co-starring Richard Dix and Chester Morris; the other two were Devil's Playground (1937) and The Marines Fly High (1940).