It's not the same thing because one example had designated Class D airspace
while the other example did not have designated Class D airspace.

One case was tower but no D going to tower with D.
The other case was D but no tower, going to tower with D.

The initial (or middle) condition was that the normally synched tower/D
combination was out of synch. That is a degree of sameness.

True, they were out of synch in the opposite direction, so it was not
"identical". But the degree of sameness is sufficient (IMHO) for the
point of the post.

So, what exactly is the charting requirement for a magenta vs a blue
airport symbol? And what is the exact relationship between class D and
a tower?

And while I'm at it... Special VFR used to be available in a surface
area. With the new alphabet, is it available above the ceiling of the
class D?

Jose
--
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