Wake Turbulence

[Oxford1G]

Hi,

Could someone in ATC, please advise me what the recommended spacing both in time and distance is between two heavy aircraft, and a heavy following a medium and light aircraft?

Thanks

[120.4]

It depends on the circumstances.

In a nut shell:

On approach, Heavy to Heavy should be 4 miles (minimum)

On departure, 1minute between the rotations of the two Heavy aircraft (that being the point at which vortex begins).

There is no wake vortex spacing requirement when a Heavy is following a medium or a light. In other words, standard IFR separations apply or visual if circumstances permit. Normal IFR separation would be 3 miles but if departing on the same route it would be 5 miles unless there were an issue with relative speeds.

Point 4


:)

[Oxford1G]

Thanks:)

[1261]

If you're interested, Oxford, our entire rule book (the Manual of Air Traffic Services Part 1) is available for your perusal online at:

http://www.caa.co.uk/publications/publicationdetails.asp?id=222

[Oxford1G]

Thanks:)