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Airfield ground lighting AGL systems provide the pilot with a high intensity visual of exact aircraft positioning, even under the most severe meteorological conditions. Because of their instrumental role during the most critical phases of airport movement ... approach, landing, taxiing and take-off, they must be highly reliable, while at the same time conforming to the strictest international standards.

International and national airport regulations place additional requirements on equipment, but generally standardisation is beneficial for manufacturers. The required type of precision approach runway lighting is determined by prevailing visibility conditions at an airfield.

Airfield Approach lighting.

Approach lighting where the widths of the horizon bars are such that, if a pilot maintains a glide that will take him to the correct touch down point, each bar will appear to be the same width as the previous one as it disappears under the nose of the aircraft. This is the CALVERT system,a British system in origin, or barrette system. There are transverse barrettes and side row barrette lighting with a 150 m crossbar. Sequenced flashing lights are used before the runway decision bar to mark the transition from instrument flight to visual flight. Precision approach path indicator (PAPI) provides the pilot with safe glide slope visual in the vertical plane.

Threshold lighting is a line of green lights at the start of the runway, with additional wing bars and RTIL (runway threshold identification lights), as required.
Runway edge lighting is designed to show the width and length of the usable landing area. Runway centre line lighting is flush along the centre of the runway. Runway end lighting defines the end of the pavement. Touchdown zone lighting is rows of white light bars (with three in each row) on either side of the centreline over the first 3000 ft (914 m) of the runway.
Taxiway lighting like taxiway edge lighting and taxiway centre line lighting assist in the case of complex taxiway systems and high traffic volumes.
Stop bars are a row of lights that an aircraft must not pass.

Runway guard lights are used at taxiway hold positions to increase safety by enhancing the visibility of the hold position, especially during poor weather conditions.

Airfield Lighting Control Systems.

ALCS (Airfield Lighting Control Systems) and dedicated sensors installed on the airfield, provide efficient and effective solutions for control and monitoring of visual aids and ground traffic movements. Intelligence is distributed over the airside area, allowing control and monitoring of individual lights. Decentral sensors detect movements of aircraft and other vehicles on the ground. The signals from individual lights and sensors are communicated to the tower through an ALCS.

Flexible control of each segment of the runway, taxiway and apron circuits, governs aircraft ground movements: taxiway routing, stopbar control, runway incursion detection for the operators in the tower. Safety of air traffic movements and number of slots per day are significantly increased with modern and reliable control systems.

Surface Movement Guidance and Control System (SMGCS).

When traffic on the ground is slowed down, high-volume airborne operations are put in jeopardy. Visibility conditions of less than 350m generally delay aircraft ground movements and reduce the total capacity of the airport.

This problem has an ideal solution in SMGCS. SMGCS identifies each aircraft, provides continuous surveillance and monitoring of taxiing traffic; determines conflict-free taxiway routes automatically and uses visual signals to guide aircraft and vehicles reliably. And in case of route deviations, it warns pilots or drivers immediately.

The comprehensive SMGCS control and monitoring functionality provides controllers with tools to enhance airport safety, efficiency and availability, under all visibility conditions.

Air Field Lighting Ltd

Maintenance Area, off Aviation Way,

Southend-on-Sea

Essex

SS2 6YF England

Contact - Keith Spicer

sales@iavna.net

Tel : 01702 547866

Fax : 01702 544792