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Runway visual range Definition from Government Dictionaries & Glossaries
(*) The maximum distance in the direction of takeoff or landing at which the runway, or specified lights or markers delineating it, can be seen from a position above a specified point on its center line at a height corresponding to the average eye level of pilots at touch-down.
Source: U.S. Department of Defense, Joint Doctrine Division. ( About )Runway visual range Definition from Science & Technology Dictionaries & Glossaries
It is the maximum distance at which the runway, or the specified lights or markers delineating it, can be seen from a position above a specified point on its center line. This value is normally determined by visibility sensors located alongside and higher than the center line of the runway. RVR is calculated from visibility, ambient light level, and runway light intensity.
Runway visual range Definition from Encyclopedia Dictionaries & Glossaries
Runway visual range (RVR), in aviation meteorology, is the distance over which a pilot of an aircraft on the centreline of the runway can see the runway surface markings delineating the runway or identifying its centre line. RVR is normally expressed in feet or meters.
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