What is the definition of Vno?

Vno is defined as the maximum structural cruising speed, which is an important airspeed to understand for the safety and performance of an aircraft. At Vno, the aircraft is operating within the normal operating range and can handle turbulent air without risking structural damage. This speed is indicated in the aircraft's operating handbook, and exceeding it in turbulent conditions could result in excessive loads that may adversely affect the aircraft's structural integrity.

This airspeed is typically identified by the green arc on the airspeed indicator, which includes all the speeds up to this maximum structural cruising speed. It is crucial for pilots to adhere to this speed to ensure safe and controlled flight operations, particularly during cruising. Understanding Vno helps pilots make informed decisions regarding aircraft performance, stability, and safety during flight.