The movie for September is Night Flight (1933, 85 mins) with Hellen Hayes, John Barrymore, Clark Gable and Lionel Barrymore; directed by Clarence Brown.
As a worried mother comforts her desparately ill son in Rio de Janeiro, the child's physician, Dr. Decosta, assures her that, thanks to the new night flying schedule of the Trans-Andean European Air Mail, which is being inaugurated that evening, they will receive a life-saving serum the next day.
It is based on the 1931 novel of the same name by French writer and pioneering-aviator Antoine de Saint Exupéry, author the The Little Prince, and based on his personal experiences while flying on South American mail routes.