Many heliports are located in crowded or remote areas with few visual cues, many obstacles in the way and where traffic control requires a certain direction to be used.
Under these conditions ICAO Annex 14 Vol.II recommends the helipad to be complemented with the aid of Visual Alignment Systems.
· ICAO Annex 14, Volume II, 4th Edition, July, 2013
· French STAC
· Combined signal of approach azimuth guidance
and threshold identification.
· Surface-level ground heliport
· Rooftop&Elevated heliport
· Airport runway
· Comprise of 2 “Flashing” Units (master and slave) lights.
· Powered in 110Vac-230Vac 50/60 Hz.
· Pre-focused reflector lamps 12 Vac 105 W.
· Remotely controlled in 48Vdc.
· Monitoring will be possible through 2 dedicated dry
contacts(Contact capacity = 250 V / 1A maximum).
· Consumption: Less than 250Watts for total SAGA system.
· Visual range: 10 nautical miles in standard visibility
· Angular sector: 15° on both side of approach axis.
· Axis accuracy: +/-0.45° in azimuth.
· Delay between flashes: 60 to 300 ms.
· “Flashes” frequency: 0.5Hz.
· Light: casting aluminum(body, cap, support) .
· Power Supply Box: reinforced polyester.
· Legs: frangible
· Fastenings: stainless steel.
· IP rating: IP65.
· Working temperature: -40°C to +50°C.