Good point, Ken. You have to be able to detect a green or red light from the
tower to see if you’re cleared to land or not – with a radio failure. You
might get this at my airfield if they’ve run out of signal flares :-)
Chris
> On 31 Oct 2018, at 17:29, Ken Norton <ken@xxxxxxxxxxx> wrote:
>
> Color vision is also required for pilots because of the legacy airport
> control tower light signals.
>
> BTW, Anchorage has, I believe, the only Class-D airspace (Merrill and
> Lake Hood airports) that does not require two-way radio
> communications. It's quite the delicate dance as the Class-D airspace
> is a combination of horizontal corridors that sneak the airplanes in
> and out under and over each other while literally getting shadowed by
> 747s.
--
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