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runway threshold

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  • runway threshold bar — A threshold bar delineates the beginning of the runway available for landing when the threshold has been relocated or displaced. A threshold bar is 10 ft (3 m) in width and extends across the width of the runway. Also called a demarcation bar …   Aviation dictionary

  • runway threshold marking — Markings placed to indicate longitudinal limits of that portion of the runway usable for landing. They consist of long vertical lines 100 ft (30 m) long and 3 ft (1 m) wide and are placed just short of runway designation markings. They consist… …   Aviation dictionary

  • Runway visual range — (RVR) is a term used in aviation meteorology to define 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… …   Wikipedia

  • Runway End Identification Lights — Runway End Identifier Lights (REIL) are installed at many airports to provide rapid and positive identification of the approach end of a particular runway. The system consists of a pair of synchronized flashing lights located laterally on each… …   Wikipedia

  • Runway — This article is about the aircraft take off and landing area. For other uses, see Runway (disambiguation). Landing strip redirects here. For the pubic hairstyle, see Bikini waxing. RWY redirects here. For the audio/video connectors, see RCA… …   Wikipedia

  • threshold lights — Bidirectional lights showing green toward the approach and red toward the runway. These are located in a continuous row across the runway threshold. Non instrument and nonprecision approach runways. Precision approach runways …   Aviation dictionary

  • runway alignment indicator lights — This airport lighting facility in the terminal area consists of five or more sequenced flashing lights installed on the extended center line of the runway. The maximum spacing between lights is 200 ft, extending from 1600 to 3000 ft from the… …   Aviation dictionary

  • runway environment — The runway threshold or approach lighting aids or other markings identifiable with the runway …   Aviation dictionary

  • threshold-crossing height — The height of the straight line extension of the visual or electronic glide slope above the runway threshold. On approach charts, the symbol TCH indicates the threshold crossing height …   Aviation dictionary

  • Runway edge lights — are used to outline the edges of runways during periods of darkness or restricted visibility conditions. These light systems are classified according to the intensity they are capable of producing: High Intensity Runway Lights (HIRL) Medium… …   Wikipedia

  • threshold lighting — or threshold lights noun A line of lights across the ends of a runway or landing area to indicate the usable limits • • • Main Entry: ↑threshold …   Useful english dictionary

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