"Bill Denton" wrote in message
...

In the body of your message, you stated: "TRSAs are a lot rarer
than ASRs". However, as has been noted, The Chicago Sectional
shows one ASR and three TRSA's, which would contradict your
observation.


Actually it wouldn't, as the presence of ASR is indicated by the depiction
of Class B or Class C airspace, by a TRSA, or by the little blue R.