Airport Approach Lighting System

Als usually serves a runway that has an instrument approach procedure associated with it and allows the pilot to visually identify the runway environment and align the aircraft with the runway upon arriving at a prescribed point on an approach.

Airport approach lighting system.

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 extends outward from the runway end. The approach lighting system or als provides the basic means to transition from instrument flight to visual flight for landing. Iv the threshold lights. Operational requirements dictate the sophistication and configuration of the approach light system for a particular runway.

Approach lighting systems als provide the basic means to transition from instrument flight to visual flight for landing. Alsf ssalr high intensity approach lighting system with elevated sequenced flasher system read about our approach lighting systems with sequenced flashing lights to provide landing approach guidance used at airports and military air bases fap approach high intensity inset light 12. Our innovative and reliable crouse hinds series solutions enable airport operators to free up money for other expenses needed to keep airports. Als are a configuration of signal lights starting at the landing threshold and extending into the approach area a distance of 2400 3000 feet for precision instrument runways and 1400 1500 feet for nonprecision instrument runways.

Airport lighting is controlled by air traffic controllers atcos at towered airports. Approach light systems als als provide the basic means to transition from instrument flight to visual flight for landing. Approach lighting systems als normal approach and letdown on the ils is divided into two distinct stages. Iii the threshold markings.

I the approach light system except that the pilot may not descend below 100 feet above the touchdown zone elevation using the approach lights as a reference unless the red terminating bars or the red side row bars are also distinctly visible and identifiable. At non towered airports the lights may be on a timer or where a flight service station fss is located at an airport the fss personnel may control the lighting. Operational requirements dictate the sophistication and configuration of the approach lighting system for a particular runway.