Private Pilot Ground Course Lesson 12: V-Speeds Explained

Quick summary: V-speeds are standardized airspeed references that tell a pilot how the airplane should be operated during different phases of flight. In Lesson 12, we break down the V-speeds every private pilot should recognize, the color-coded ranges on the airspeed indicator, and the difference between indicated, calibrated, true, and ground speed.

What Are V-Speeds?

The “V” stands for velocity. V-speeds give pilots specific indicated airspeeds associated with aircraft performance or operating limitations. Some are marked directly on the airspeed indicator, while others are found in the airplane’s POH or AFM.

The important point is that these numbers are not interchangeable between airplanes. Learn the concepts, but always use the published speeds and limitations for the aircraft you are actually flying.

The Four Airspeeds You Need to Understand

Indicated Airspeed (IAS)

Indicated airspeed is what you read directly from the airspeed indicator. When we talk about most operational V-speeds, this is the speed the pilot is watching in the cockpit.

Calibrated Airspeed (CAS)

Calibrated airspeed is indicated airspeed corrected for instrument and position error. Your POH or AFM provides the information needed to determine the correction for your airplane and configuration.

True Airspeed (TAS)

True airspeed is calibrated airspeed corrected for altitude and nonstandard temperature. As altitude increases, true airspeed can be considerably higher than the indicated airspeed shown in the cockpit.

Ground Speed

Ground speed is how fast the airplane is actually moving across the ground. Wind is the big difference here: a headwind reduces ground speed, while a tailwind increases it.

Vx and Vy: Best Angle vs. Best Rate

Vx is best angle-of-climb speed. It gives you the greatest altitude gain over the shortest horizontal distance, which is why obstacle clearance is the classic example.

Vy is best rate-of-climb speed. It gives you the greatest altitude gain in the shortest amount of time. Vx is about distance; Vy is about time.

Va: Maneuvering Speed

Va is design maneuvering speed. Maneuvering speed changes with aircraft weight, so pilots should use the POH/AFM information for the airplane and conditions they are flying. It is an important reference when considering abrupt control inputs and turbulence, but it should never be treated as permission to make unlimited or repeated full control movements.

Reading the Airspeed Indicator

White Arc — Flap Operating Range

The lower end of the white arc is associated with Vso, the stalling speed or minimum steady flight speed in the landing configuration. The upper end is Vfe, the maximum flap-extended speed. Extending flaps above the applicable limitation can damage the airplane.

Green Arc — Normal Operating Range

The lower limit is associated with Vs1, the stalling speed or minimum steady flight speed in a specified configuration. The upper limit is Vno, maximum structural cruising speed.

Yellow Arc — Caution Range

The yellow arc begins above Vno. Operations in this range are for smooth air and should be conducted with caution.

Red Line — Vne

Vne means never-exceed speed. The name is literal: do not exceed it. Structural and aerodynamic limitations exist whether the air feels smooth or not.

Retractable-Gear V-Speeds

Two additional speeds private pilots may encounter are Vlo, the maximum speed for operating the landing gear, and Vle, the maximum speed with the landing gear extended. Depending on the airplane, the limitations can differ, so the POH/AFM remains the final authority.

Why V-Speeds Matter in the Cockpit

V-speeds turn aircraft performance and structural limitations into numbers you can actually use while flying. They help you choose the right climb profile, stay within flap and gear limitations, recognize the airplane’s normal and caution ranges, and avoid exceeding structural limits.

A good student pilot does more than memorize the letters. Understand what each speed is protecting you from or helping you accomplish, and then learn the exact values for the airplane you fly.

Watch Private Pilot Ground Course Lesson 12

Watch the complete lesson: V Speeds EXPLAINED! (Private Pilot Ground Lesson 12).

Continue Your Private Pilot Training

Lesson 12 is part of the Red Yeti Aviation Private Pilot Ground Course. The complete course combines structured lessons, reading assignments, quizzes, practice questions, and FAA written-test preparation.

View the Red Yeti Aviation Private Pilot Ground Course.

Keep learning the “why” behind the numbers. When you understand what a V-speed represents instead of simply memorizing a letter, it becomes much easier to apply that knowledge in the airplane.