Where was Test Pilot filmed?

1938 American film directed by Victor Fleming

Test Pilot (1938) was filmed in San Diego International Airport, Van Nuys and March Air Reserve Base, 3 places named in its Wikipedia article's Production section, in the United States. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.

See them on the map → Wikipedia Source data

Places per Wikipedia's Production section

Wikipedia’s Production section names 3 places. Each links to the sentence that says so.