"Hamish Reid" wrote in message
...

I guess I still don't follow... I made the mild claim that TRSAs seem
to be a lot rarer than ASRs (and else-thread pointed out that the
entire West Coast region seems to have only one or two TRSAs
vs several dozen ASRs at least). In article

you objected to this and said that because the Chicago sectional shows
one ASR and three TRSAs, this would contradict my observation.

But the Chicago sectional depicts quite a lot more than one ASR, and in
some other parts of the country the ASR/TRSA ratio is even greater.
basically, it seems that TRSAs are relatively rare compared to ASRs.
So I don't understand your objection.


TRSAs are relatively rare compared to Class B or Class C airspace areas.
Every TRSA has ASR.