"Ron Natalie" wrote in message
m...
snip

Of course, it only took them about a year to realize that there
were times they wanted to have a control tower but didn't want
to set up a class D airspace (controlled airspace takes a NPRM
process to set up). Temporary or new towers frequently get
turned on without the class D having been established. So,
they brought back the ATA except that they don't call it that.
You'll find a quaint additional reg that says you gotta call
the tower while within 4NM and 2500 of an control tower (even
in class E or G airspace... 91.127(c), 91.126(d)).


How does a sectional indicate an airport with a tower but no class D?

Danny Deger
One problem with the alphabet airspace reclass is we did lose
some nice terms. "Control Zone" was much better than "Surface
Area of controlled airspace designated for an airport". And
Airport Traffic Area is better than "within 4NM miles from the
surface to 2500' agl of an airport with an operating control tower."