Which of the following must not be confused with the maximum structural cruising speed (VNO)?

The maximum structural cruising speed, often denoted as VNO, represents the highest speed at which the aircraft can be safely flown in turbulent air. It is a critical airspeed that helps in maintaining the structural integrity of the aircraft during normal operations, particularly in adverse weather conditions.

Max operating speed, which is commonly referred to by the acronym VNE (never exceed speed), is a different parameter that indicates the maximum speed that should not be exceeded in any situation. This is crucial as exceeding this speed could lead to structural failure of the aircraft. Therefore, it is essential to differentiate VNO from VNE as they serve distinct safety roles and operational limitations within aviation.

Understanding the specific uses and limits associated with these speeds is vital for safe flight operations, making the distinction clear and important for pilots. This is why distinguishing VNO from max operating speed is critical, as it emphasizes the safety strategies employed in aviation concerning speed thresholds.