Private Pilot License (PPL) Aerodynamics Practice Exam

What does Vso indicate?

1. Maximum safe operating speed

2. Stalling speed in the landing configuration

3. Best climb speed

4. Minimum cruise speed

The correct answer is: Stalling speed in the landing configuration

Vso indicates the stalling speed in the landing configuration. This is the lowest speed at which the aircraft can maintain controlled flight while in the landing configuration, typically defined as the gear down and flaps extended position. Understanding Vso is essential for pilots because it plays a significant role in determining safe landing practices, approach speeds, and recognizing the stall characteristics of the aircraft in this configuration. When flying below Vso, the aircraft may enter a stall condition, leading to a loss of control. Therefore, being aware of Vso helps pilots maintain awareness of their speed relative to stall margins during critical phases of flight, particularly during approach and landing. This knowledge is crucial for achieving safe landings and executing effective go-arounds if necessary.