Trivia: It took Jackie Chan a full week to build up the courage to do the clocktower stunt in which he falls from the top of the clocktower to the ground. The scene was filmed in three takes. The first time it was filmed, Chan couldn't bring himself to let go, and he had to hold onto the clock until his arms simply gave out. And to top it off, Chan almost died during the course of filming the scene. To this day almost forty years later, it's still considered one of his most dangerous and harrowing stunts.
Trivia: The original title for the film roughly translated to "Pirate Patrol." The title was changed during production, however, as Jackie Chan and the producers feared that other Hong Kong studios would rush to copy the film by making similar pirate-themed adventures. Chan later chose the much more vague title of "Project A," since it gave nothing away about the plot.
Trivia: The first Jackie Chan film to include outtakes during the credits. Unfortunately, the outtakes were edited out of most western releases.
