The airplane in the film is a Ford Tri-Motor. 199 were built between 1926 and 1933. It was the first all-metal commercial passenger airliner and saw service throughout the world. Although the corrugated aluminum skin was extremely robust, it contributed to significant drag that hampered the plane's performance. It was soon outclassed by the Douglas DC-2 and Boeing 247.
The "tomorrow I'll be sober" exchange was swiped from W.C. Fields' "It's a Gift."
Body count: 1
The airplanes used in this movie were,
Ford Trimotor 4-ATB c/n 24, NC5578.
Stinson SM-8A c/n 4024, NC215W.
Fokker Super Universal.