Abstract: A portable computer system allows a pilot to efficiently and effectively manage time-oriented and other flight-related tasks. The system preferably includes a microprocessor coupled to a display/input screen. The microprocessor, which includes or is coupled to a timer, preferably executes one or more application programs that are configured to receive information from and display information to the pilot. The application program is preferably hierarchically arranged and menu-driven for navigating among the various displays and thereby retrieving the desired information or initiating the desired functionality.