Steven P. McNicoll wrote:
"Danny Deger" wrote in message
...
Is the difference the class G airports don't have a precision approach.
If I recall the old Control Zones were put in place at airports with
precision approaches.


No. There were airports without control zones that had ILSs and airports
with control zones that did not have ILSs.


Generally, it was an instrument approach and someone (now something) on
the ground to report the weather. But there were exceptions to that
even.