"John R. Copeland" wrote:

"Steven P. McNicoll" wrote in message ink.net...

.... What
about control towers? How many serve strictly GA airports?


Unrepresentative though it may be, within 20 miles of me, it's 2 of 4.

Within 60 miles of my residence in SoCal there have to be some 10 Class D airports that have zero Part 121 operations.