Crack Up (1936 film)

CrackUp is a 1936 American film directed by Malcolm St. Clair. Peter Lorre plays a harmless, halfaddled aircraft enthusiast who is actually a ruthless spy desperate to get his hands on the blueprints for an experimental aircraft. He faces off against Ace Martin, played by Brian Donlevy, the pilot of the aircraft, whose motives are spurred by feeling cheated by his own company. The supporting cast includes Helen Wood, Ralph Morgan and Thomas Beck.

Gimpy seeks out a disgruntled Ace Martin and offers him money to betray his employer. Ace uses Joe, his young protg, to obtain the plans, telling him he had made the blueprints. The Barons Operative 77 J. Carrol Naish, secretly working for another spy organization, attempts to get the plans, offering Ace three times more money. The meeting between the two is watched by the baron, forcing Ace to kill the spy and keep the plans to bargain directly with the baron.On the maiden flight of the Wild Goose, Ace and Joe are flying to Berlin with the company president on board. When they are in the air, Colonel Gimpy reveals that he has stowed away to accompany them. A gas cap comes loose, jeopardizing the flight. Ace volunteers to climb out onto the wing and secure the gas cap. ........

Source: Wikipedia