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The goal of this project was to program a MicroPilot 2128g autopilot device applying Horizonmp software to achieve autonomous flight using an 8’ wingspan RC aircraft. The main focuses throughout this project were to modify aircraft construction to accommodate the autopilot unit, learn the functions of the software to communicate with the autopilot, and to determine the requirements for the autopilot device to work properly. One of the main difficulties encountered was establishing communication between the software and autopilot. For the software and autopilot to communicate properly Windows XP was required. In the software it was necessary to input GPS coordinates of a selected area; once this was achieved it was possible to insert waypoints for the autopilot to track using a GPS antenna. When in flight aircraft maneuvers can be monitored via laptop display using the software and wireless COM’s communication.