Alan Eaton is depicted as flying in three different airplanes on his flight to Washington, D.C. at the beginning of the film. First is an obvious model of a Lockheed Constellation (L-049 or L-749) with round windows. Next, as seen from inside and outside is a Lockheed Super Constellation (L-1049) with square windows and a white nose. Lastly, when the airliner lands it is a Lockheed Starliner (L-1649A) with a black nose.
Shadow of boom mic visible when Alan Eaton (Dana Andrews) falls back against the window blinds in his office.