The video introduces the primary components of an airplane: the fuselage, wings, empennage, engines, and landing gear. Each component's function will be discussed in detail.

The fuselage is the main body of the aircraft, housing the cockpit (where pilots sit), passenger areas, and cargo compartments for luggage. It's often referred to as the flight deck in the cockpit area.

The wings are crucial for providing the majority of the lift an airplane needs to fly. They also often contain integral fuel tanks to power the engines. Winglets, located at the end of each wing, help reduce drag and improve efficiency.

Ailerons are located on the rear of the wings and work in opposition to each other to increase lift on one wing while reducing it on the other. This differential lift causes the aircraft to roll sideways, enabling turns.

The empennage refers to the entire tail area of the aircraft, consisting of horizontal and vertical stabilizers. These stabilizers primarily incorporate elevators and rudders, which are critical for controlling the aircraft's pitch (up and down motion) and yaw (side-to-side motion).

The horizontal stabilizer provides a downward force on the tail, helping to balance the aircraft and prevent its nose from moving excessively up or down. The elevator, a hinged part of the horizontal stabilizer, directs the nose of the aircraft upwards or downwards, enabling the airplane to climb or descend.

The vertical stabilizer stabilizes the aircraft's left and right motion, preventing side-to-side movement (yaw). The rudder, attached to the vertical stabilizer, steers the nose of the aircraft left or right, facilitating turns. Yaw is the side-to-side motion, while pitch is the up and down motion.

The engines are responsible for generating thrust, the force needed to propel the aircraft forward. They achieve this by taking in air, accelerating it, and pushing it out behind the aircraft. The video mentions two types: jet-powered, which use turbines to compress air, and propeller-powered engines.

The landing gear is located on the underside of the aircraft and consists of wheels with tires attached to struts. Its primary function is to facilitate safe takeoffs and landings. The struts help to soften the impact with the ground during landing.

The video concludes by summarizing the discussed major aircraft components: fuselage, wings, tail, engines, and landing gear. It also mentions that other parts like spoilers and flaps will be covered in future videos.