Vs is the speed of the surface facility in knots;
S is the track spacing in nautical miles;
Va is the aircraft’s true air speed (TAS) in knots, and
L is the length of the aircraft’s search leg in nautical miles.


Vs is the speed of the surface facility in knots;
S is the track spacing in nautical miles;
Va is the aircraft’s true air speed (TAS) in knots, and
L is the length of the aircraft’s search leg in nautical miles.


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