Edward G. Robinson, who played the pilot instructor, worked for free.
The portrait photo of David Wilton's (played by Richard Attenborough) girlfriend is that of Attenborough's wife, the actress Sheila Sim.
This movie received its earliest documented U.S. telecasts in New York City, Tuesday, January 11, 1949 on Film Theater of the Air on WCBS (Channel 2), in Atlanta, Georgia, Wednesday, May 4, 1949 on WSB (Channel 8), in Los Angeles, California, Thursday, September 22, 1949 on KNBH (Channel 4), and in Cincinnati, Ohio, Sunday, October 30, 1949 on WCPO (Channel 7).
In WWII the RAF had Sergeant pilots. These pilots flew everything from single seat fighters to heavy bombers.