Visual Alignment Guidance System (SAGA) provides a combined signal of approach azimuth guidance and threshold identification

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Visual Alignment Guidance System (SAGA) provides a combined signal of approach azimuth guidance and threshold identification


For more detail
www.cdt-en.com
emma@chendongtech.com

#approachlighting#beacon#fatolighting#TLOFllighting



visual alignment guidance system should be provided to serve the approach to a heliport where one or more of the following conditions exist especially at night:
a) obstacle clearance, noise abatement or traffic control procedures require a particular direction to be flown;
b) the environment of the heliport provides few visual surface cues; and
c) it is physically impracticable to install an approach lighting system.
The visual alignment guidance system shall be located such that a helicopter is guided along the prescribed track towards the FATO.
The system should be located at the downwind edge of the FATO and aligned along the preferred approach direction.

Shall be frangible and mounted as low as possible.

Lightunits shall be located such that at theextremes of system coverage the angle subtended between
units as seen by the pilot shall not be less than 3 minutes of arc.

Signalformat of the alignment guidance system shall include a minimum of three discrete signal sectors providing “offset to the right”, “on track” and “offset to the left” signals.

The divergence of the “on track” sector of the system

Signalformat shall be such that there is no possibility of confusion between the system and any associatedVASI

The signal format shall be such that the system is unique and conspicuous in all operational environments 

The system shall not significantly increase the pilot workload.











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