obstruction light

obstruction light

[əb′strək·shən ‚līt]
(navigation)
A light indicating the presence of an obstruction.

obstruction light

Distinctive lighting to provide a uniform means for indicating the presence of obstructions, especially at night or in poor visibility conditions. An obstruction light, or one group of lights, is usually red or white, visible 360°, and frequently mounted on top of structures or natural terrain to warn pilots of the presence of obstructions. An obstruction may be marked with flashing aviation red beacons (20 to 40 flashes per minute) and steady burning aviation lights during nighttime operations and with aviation orange and white paint as daytime markings. Obstructions also may be marked with high-intensity white obstruction lights during the daytime, with reduced intensity at twilight and during nighttime operations. In this case, the use of orange and white markings for daytime operations may be omitted. Medium-intensity flashing white obstruction lights may be used during the daytime and twilight, with automatically selected reduced intensity for nighttime operation. When this system is used on structures 500 ft (150 m) AGL (above ground level) or less in height, other methods of marking and lighting the structure may be omitted. Aviation orange and white paint is always required for daytime marking on structures exceeding 500 ft (150 m) AGL. This system normally is not installed on structures less than 200 ft (60 m) AGL. In certain cases, dual lighting and flashing high-intensity lights may be used during the daytime. Similarly, at night, flashing aviation red beacons and steady burning aviation red lights may be used. Lighted markers are available for increased night visibility of high-voltage (69 kV or higher) transmission line catenary wires. Lighted markers provide visibility both day and night. See obstruction.
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References in periodicals archive ?
Tenders are invited for provision of solar power obstruction light system on the nearby hill top at aurangabad airport.
To prevent aircraft collisions, the Federal Aviation Administration (FAA) requires that all towers over 200 feet be equipped with obstruction lighting and control systems and for the infrastructure owner to file a Notice to Airmen (NOTAM) to alert the FAA of the potential hazard when an obstruction light fails.
Avlite Systems has enhanced aviation safety with its obstruction lighting product portfolio, with the addition of the self-contained solar LED low-intensity obstruction light (LIOL), which is compliant to FAA L-810 photometric requirements, the company said.
Testing of the wind turbine tower's obstruction light revealed the system was not operational in its as-removed state.
Avlite Systems said it has announced the new ICAO Type A and Type B Medium Intensity Obstruction Light.
Tilton, NH, April 14, 2015 --(PR.com)-- Avlite Systems today unveiled the FAA L-864 LED medium intensity obstruction light (MIOL).
Tenders are invited for provision of solar power obstruction light system at the near by hill top at aurangabad airport
With even more robust integrated lightning protection, the L-864/L-856 can sustain multiple direct hits and is proven to be the toughest obstruction light on the market.
M2 EQUITYBITES-November 30, 2015-Avlite Systems releases medium intensity obstruction light
Idman had a new LED obstruction light on show and with LEDs having a 100,000-hour life (approximately ten years of normal use), a vast improvement over light bulbs, the prospects for LED systems are good now that the luminance levels are reaching those needed to meet international air traffic standards.
Tenders are invited for 30 volt 3a smps for medium aviation obstruction light one no.
Tenders are invited for Installation of 03 nos obstruction light on dvor tower and other misc.