This course provides an introduction to the principles governing the motion of aircraft. Students will learn about the fundamental equations of motion, coordinate transformations, and stability analysis. Key topics include nonlinear aircraft dynamics, trim and linearization, and the stability characteristics of fixed-wing aircraft in steady flight. The course will cover both longitudinal and lateral-directional flight dynamics. By the end of the course, students will learn how an aircraft responds to control inputs and external disturbances, which forms the foundation for more advanced studies in flight mechanics and control.