That is the section at the back which usually supports the elvators, fin and rudder. Many larger aircraft may also have an APU there.
empennage
rudder
It allows the airplane to fly the direction you want it to.
an airplane
An inverted airfoil on the the horizontal stabilizer of an airplane will stabilize the aircraft along the horizontal axis in forward flight.
Depending on context this could either be 'aft' (when inside the airplane), or 'Empennage' when referring to the entire tail section (the horizontal and vertical stabilizers, the rudder, the elevators, as well as rudder and elevator trim).
The elevator section of an airplane is located in the aft of the airplane, or on the little wings in the back section of the airplane. The elevators move the airplane on its vertical axis, thereby making the airplane climb or descend.
The back of an airplane is commonly referred to as the "tail." This section includes important components such as the horizontal stabilizer and vertical stabilizer, which help maintain stability and control during flight. The tail also houses the rear cargo door in some aircraft and can be a key area for aerodynamics.
It part of the tail.
Tail will tilt up
Brian chose to use the tail section of the airplane as a shelter instead of a lean-to in the book "Hatchet" by Gary Paulsen.
So that it can land like an airplane