Heliport Approach Azimuth - SAGA (System of Azimuth Guidance for Approach) System ,combined signal of approach azimuth guidance and threshold identification

 

Heliport Approach Azimuth - SAGA (System of Azimuth Guidance for Approach) System 

Combined signal of approach azimuth guidance and threshold identification, coupled with a PAPI system , the SAGA system provides the pilot with the safty and the comfort of an “Optical ILS".

The SAGA system includes two light units (one Master and one Slave) placed symmetrically on both sides of the Runway (or TLOF) threshold supplying unidirectionalrotating beams which give a flashing effect.

• When the aircraft flies inside a 9° width angular sector centred  on the approach axis, the pilot sees the two lights flashing simul.
• When the aircraft flies inside a 30° width angular sector, centred on  the approach axis and outside the previous one, the pilot sees the two lights“flashing” with a variable delay (60 to 330 ms) according to the position of the aircraft in the sector. 
• The further the aircraft is from the axis, the greater the delay. The  delay between the two “flashes” produces  a sequence effect which  shows the direction of the axis- the visual signal is not visible  when the aircraft flies outside the 30° angular sector.

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