VNO speed
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- The correct title of this article is VNO speed. It features superscript or subscript characters that are substituted or omitted because of technical limitations.
VNO of an aircraft is the V speed which refers to the velocity of normal operation. VNO is specified as the high end of a green arc on many airspeed indicators. This speed is specific to the aircraft model.
VNO is also called the maximum structural cruising speed or the maximum speed to be used in turbulent conditions. The range above VNO is marked on the airspeed indicator as a yellow arc from VNO to the VNE (red line.) The yellow arc is a caution, as speeds in this region may add dangerous stress to the aircraft, and are only to be used in smooth air when no turbulence or abrupt control inputs are expected.
