threshold marking

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• 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

• 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

• 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

• 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

• airport marking aids — Markings used on runways and taxiway surfaces to identify a specific runway, a runway threshold, a centerline, a hold line, etc. A runway should be marked in accordance with its present usage, such as visual, nonprecision instrument, and… …   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

• 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

• 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

• 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

• Government contract — Contracting with the U.S. Government is based on many of the same principles as commercial contracting andcan be very profitable, but is sufficiently different from commercial contracting to require special care.Persons entering into commercial… …   Wikipedia