In article ,
"Bill Denton" wrote:

Please review the subject of this thread, which is the use of an "R" in a
circle on Sectional Charts to denote the presence of Airport Surveillance
Radar at specific airports.

Thread drift, it's called :-).

It appears Mr. Reid introduced TRSA's into the mix, a point I failed to
note.

Erm, what?! It appears Ron Natalie, in
om, introduced TRSAs
into the mix, a point you failed to note:

"Ron Natalie" wrote in message
m...

One thing that VFR's should note, that while participation is voluntary
in the TRSA, many TRSA towers get a bit testy if you don't go in
through the TRSA-approach control.

That was included in the article of mine that you responded to. And it
may have been introduced earlier by someone else -- I didn't follow the
references all the way. I just happened to notice the reference to
TRSAs, and started wondering...

And it appears that a TRSA is not the same thing as Airport
Surveillance Radar.

Well, no -- TRSAs are a lot rarer than ASRs. Which is why I asked the
question about TRSAs (having never actually encountered one myself).

Such is Usenet, I guess.

Hamish