wrote in message
oups.com...
Is there somewhere I can find out if this airport (KORH) has an
appropriate Cat II or Cat III Approach?

Generally speaking, you can look at the A/FD information which is usually
up-to-date at www.airnav.com. If a Cat II or Cat III ILS approach is not
listed, then the airport isn't equipped for Cat II or Cat III approaches (I
think lighting and airport markings is the primary criteria).

Compare entries for major commercial airports, like KSEA, KLAX, or KLGA, to
see what an airport that does have Cat II and Cat III approaches looks like.

As far as your original question goes:

It is theoretically possible for an airplane to land using a Cat I approach
in fog. I don't know the exact cut-off to differentiate between "fog" and
"mist", but I doubt the article you're concerned about is actually using an
official definition. So, in the colloquial definition of "fog", visibility
could be anywhere from as much as a mile, maybe even more, to as low as 0
feet. A Cat I approach isn't sufficient for 0 visibility, but it's plenty
for 1 mile (and visibilities lower than that).

So...the answer to "can anyone legally land in fog" is "yes", even if the
airport has only a Cat I approach.

Pete