In the opening sequence, after the kidnapper chase, Frankie introduces herself to Mr. Anderson as a private detective; however in a later scene in the Anderson household this introduction is repeated as if the first had never happened.
When entering the aviators club Frankie needs an Escort and George Crabtree comes to her aid. After he introduces himself to her he already knows her name although they haven't been introduced.
Frankie Drake rides a Janus motorcycle. These were not produced until 2011, nearly 90 years after this is set.
In the hangar confrontation scene at approx. 2:52 Mr. Anderson threatens the baby with a pipe wrench. The handle of pipe wrench is bent in wrong direction, obviously a fake wrench.