"Jose" wrote in message
...
Rather, the issue is that as the FARs are written, it violates 91.123b to
disobey an ATC instruction, except in an emergency. So if you're
instructed to enter Class B without a clearance, you violate one FAR or
another *whether you comply or not*.

How is this different from "refusing" to obey an ATC instruction that
would be impossible to follow? There is no stated exception for
impossible things either, but somehow nobody gets busted for that.

That's because (as you acknowledge by your use of scare-quotes) there is no
actual refusal to be busted for in that case.

--Gary