approach lights

A system of high-intensity lights located along the approach path of an instrument runway. The lights radiate beams in a directional pattern by which a pilot aligns the aircraft with the extended centerline of the runway on the final approach for landing. They assist the pilot in transitioning from instrument flight conditions to visual conditions at the end of an instrument approach. These lights extend into the approach area up to a distance of 2400 to 3000 ft (730–900 m) for the precision instrument runway and 1400 to 1500 ft (420–450 m) for the nonprecision runway.
Layout of a simple airfield approach lighting system.

Aviation dictionary. 2014.

Look at other dictionaries:

  • Approach lighting system — The approach lighting system of Bremen Airport An approach lighting system, or ALS, is a lighting system installed on the approach end of an airport runway and consisting of a series of lightbars, strobe lights, or a combination of the two that… …   Wikipedia

  • approach light contact height — The height on the glide path of an instrument landing system from which a pilot making an approach can expect to see the high intensity approach lights …   Aviation dictionary

  • Approach Lighting System — Lichtanlage zur Anflugsunterstützung auf dem Fliegerhorst Nörvenich. Ein Approach Lighting System (ALS), auf Deutsch Anflugbefeuerung, ist bei einem Flugplatz ein Beleuchtungssystem, das vor der Schwelle einer Landebahn angebracht ist. Es besteht …   Deutsch Wikipedia

  • approach light — noun : one of a group of usually green lights placed outside a landing area and arranged to indicate to the pilot of an approaching airplane the direction and termination of a runway or landing strip * * * Aeron. one of a series of lights… …   Useful english dictionary

  • Approach chord — I vi ii V turnaround in G[1]   …   Wikipedia

  • approach light — Aeron. one of a series of lights installed along the projected centerline of an airport runway to assist a pilot in aligning the aircraft during the approach to landing at night. [1925 30] * * * …   Universalium

  • runway identification lights — Lights provided at aerodromes where the terrain precludes the installation of approach lights or where extraneous non aeronautical lights or the lack of daytime contrast reduces the effectiveness of approach lights …   Aviation dictionary

  • terminal bar lights — A part of an approach lighting system, consisting of red lights between final approach lights and wing bar lights …   Aviation dictionary

  • Missed approach point — (MAPt or MAP) is the point prescribed in each instrument approach at which a missed approach procedure shall be executed if the required visual reference does not exist. It defines the point for precision and non precision approaches when the… …   Wikipedia

  • rabbit lights — A colloquialism for sequentially flashing lead in runway approach lights …   Aviation dictionary

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