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 either of eight longitudinal stripes of uniform dimensions disposed symmetrically about the runway centerline, or the number of stripes is related to the runway width, as indicated in the illustration. Green lights on either side of the runway indicate the threshold at night or in restricted visibility.

Aviation dictionary. 2014.

Look at other dictionaries:

  • 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

  • runway designators — The direction of runway centerline, published and marked as two digits just after the threshold marking on both ends of the runway (e.g., 09/27, meaning the runway orientation is between 085° and 094° on one side and 265° and 274° on the other).… …   Aviation dictionary

  • runway alignment/orientation/heading — The direction of a runway centerline, published and marked as two digits just after the threshold marking on both ends of the runway (e.g., 09/27, meaning the runway orientation is between 085° and 094° on one side and 265° and 274° on the other) …   Aviation dictionary

  • threshold — The beginning of that portion of the runway usable for landing (ICAO). On instrument runways, it is indicated by long stripes followed by the runway designation marking. The number of stripes is dependent on the width of the runway …   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

  • runway aiming point marking — The aiming point marking serves as a visual aiming point for a landing aircraft. These two rectangular markings consist of a broad white stripe located on each side of the runway centerline and approximately 1,000 ft from the landing threshold.… …   Aviation dictionary

  • runway marking — There are three types of markings on civil airfields: visual, nonprecision instrument, and precision instrument. Military airfields may use abbreviated markings in some cases. The basic markings on runways used for operations under VFR (visual… …   Aviation dictionary

  • Displaced threshold — A displaced threshold is a runway threshold located at a point other than the physical beginning or end of the runway. The portion of the runway so displaced may be used for takeoff but not for landing. Landing aircraft may use the displaced area …   Wikipedia

  • visual runway — A runway intended solely for the operation of aircraft using visual approach procedures, with no straight in instrument approach procedure and no instrument designation indicated on the national authority’s approved airport layout plan, military… …   Aviation dictionary

  • nonprecision instrument runway — A runway having an existing instrument approach procedure utilizing air navigation facilities with only horizontal guidance, for which a straight in nonprecision instrument approach procedure has been approved. The normal markings for such… …   Aviation dictionary

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