Could you explain? I'm talking ifr here, and imc. Using my example,
you're at 6000 feet msl over the appalachians. How is 2500 AGL easy
to eyeball?

I suppose under those circumstances, it would be challenging. However,
the 2500 foot rule only applies within four miles of a class C or D
airport. That would place you right in the traffic pattern, and it's
unlikely that ATC would route you through there unless you are actually
on an approach, at which point you are unlikely to want to speed, and
will have your approach plates handy as a reference.

I suppose you could be landing at Danbury in the fog in an F-15, and be
told to keep your speed up as the Space Shuttle is behind you. And in
that case, you are "authorized by ATC", which is part of that particular
regulation, so you can hustle your buns.

Jose
--
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