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According to 14 CFR part 1, how is VNO defined?

  1. Minimum control speed

  2. Maximum structural cruising speed

  3. Stalling speed in landing configuration

  4. Design maneuvering speed

The correct answer is: Maximum structural cruising speed

VNO is defined as the maximum structural cruising speed. This value is critical for pilots because it represents the maximum speed at which the aircraft can be safely flown in turbulent air. It is also the upper limit of the green arc on the airspeed indicator, marking the transition from normal operating conditions to the caution range where caution must be exercised. Flying above VNO could potentially expose the aircraft to excessive structural loads during turbulence, which is why understanding this speed is vital for maintaining the integrity of the aircraft during flight. It is essential for pilots to be aware of VNO as it helps ensure safe operation within the aircraft’s structural limits.