The document provides information about designing and building radio controlled model airplanes. It describes the main parts of an RC airplane like the fuselage, wings, tail, engine and propeller. It explains how control surfaces like ailerons, elevators and rudders control the roll, pitch and yaw of the plane. The document also gives an overview of basic aerodynamic forces on planes like lift, drag, thrust and weight. It provides guidance on selecting materials and constructing the wings and tail of a model plane. Finally, it defines important electronics and terminology used for radio controlled flight.