Private Pilot Ground Course Lesson 9: How to Turn an Airplane

Turning an airplane looks simple from the cockpit: bank the wings, hold the desired attitude, and roll out on the new heading. But the aerodynamics behind a coordinated turn are worth understanding, especially for student pilots preparing for the FAA knowledge test and their first hours of flight training.

In Lesson 9 of the Red Yeti Aviation Private Pilot Ground Course, we break down what actually makes an airplane turn, why banking changes the direction of lift, and why coordinated rudder matters.

What Actually Makes an Airplane Turn?

An airplane does not turn simply because the nose points left or right. In normal flight, lift acts primarily upward. When the airplane is banked, the lift vector tilts with the wings. That tilted lift can be thought of as having two components: a vertical component that helps support the airplane's weight and a horizontal component that pulls the airplane into the turn.

The greater the bank angle, the larger that horizontal component becomes. At the same time, less of the total lift is acting vertically. That is why a pilot normally needs to increase back pressure during a level turn. The airplane must produce enough additional lift to maintain altitude while also providing the horizontal force needed to change direction.

Bank, Lift, and the Turning Force

This is one of those concepts that becomes much easier once you picture the lift vector leaning into the turn. The wings are still producing lift, but the direction of that lift has changed. The horizontal component is what accelerates the airplane toward the inside of the turn and curves the flight path.

For a student pilot, this also explains why steeper level turns require more lift and why the airplane's load factor increases as bank angle increases. We will build on that relationship in the next lessons.

Why Rudder Is Needed in a Turn

Ailerons establish the bank, but using aileron by itself can create adverse yaw. When one aileron moves down to increase lift on its wing, it also increases drag. The opposite aileron moves up, generally reducing lift and drag on that wing. The drag difference can initially yaw the nose opposite the direction of the intended turn.

That is why pilots coordinate aileron and rudder inputs. Proper rudder pressure counters adverse yaw and keeps the airplane coordinated as the bank is established. Once the desired bank angle is reached, the controls are adjusted as necessary to maintain that bank and keep the airplane coordinated.

What a Coordinated Turn Should Feel Like

In a properly coordinated turn, the airplane is neither slipping excessively toward the inside of the turn nor skidding toward the outside. The pilot uses visual references, control feel, and the airplane's coordination indication to keep the maneuver balanced.

This matters for more than smooth flying. Understanding coordination becomes increasingly important as you study stalls, traffic patterns, maneuvering flight, and the hazards associated with an uncoordinated stall.

A Practical Way to Think About Turns

When you enter a normal turn, think of the controls as working together rather than independently. Aileron establishes the bank, coordinated rudder keeps the nose from yawing incorrectly, and elevator helps maintain the desired pitch and altitude. As you approach the desired heading, begin the rollout early enough to avoid overshooting, using coordinated aileron and rudder in the opposite direction to bring the wings level.

Exact control pressures and attitudes vary by aircraft, airspeed, bank angle, and operating conditions, so always use the procedures and limitations for the airplane you are flying.

Watch Private Pilot Ground Course Lesson 9

Video: How to Turn an Airplane (FREE PPL Ground Lesson 9)

Continue Your Private Pilot Training

Lesson 9 is part of the Red Yeti Aviation Private Pilot Ground Course, designed to build the aeronautical knowledge you need for the FAA Private Pilot knowledge test while giving you practical explanations you can carry into the cockpit.

View the Red Yeti Aviation Private Pilot Ground Course

Keep studying, keep asking why, and make each lesson something you can apply when you fly.