R in a Circle (Airport Surveillance Radar) on VFR charts

The correct answer was posted three days ago.

The incorrect answer was also postd three days ago.

(sorry, couldn't resist.)

Jose
(you know the one about the pilot who's lost somewhere around Redmond....)
--
(for Email, make the obvious changes in my address)

In article ,
"Bill Denton" wrote:

This is one of those threads that has taken on a misbegotten life of it's
on!

Here's an excerpt of one of my previous posts that (I think) provides the
correct answer to the original question on this thread:

The purpose of the "R" is to denote airports that have ASR where there would
be no other indication to a pilot that it existed.

I don't think anyone is contradicting this. But it's hardly the subject
of many of the articles you've been responding directly to.

Hopefully this will end it and we can move on to other fun stuff!

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. So
basically, it seems that TRSAs are relatively rare compared to ASRs. So
I don't understand your objection.

Hamish

"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.

"Bill Denton" wrote in message
...

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.

It appears Mr. Reid introduced TRSA's into the mix, a point I failed to
note. And it appears that a TRSA is not the same thing as Airport
Surveillance Radar.

So, my statement, in response to the original subject, that the only
Airport
Surveillance Radar on the Chicago Sectional is at Waterloo (ALO) is
correct,
assuming that I found all that were on the chart.

And your statement, in response to the changed subject: "I know of TRSAs
at
Rockford, Illinois, and Muskegon and Kalamazoo, Michigan", is also
correct.


So please pay better attention to the messages you're responding to.

I will give each message as much attention as I can, which is not always
very much. And I am not going to get upset with myself if I miss a situation
where someone changes the subject mid-thread.

And you will notice I had no problem acknowledging my mistake.


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

"Bill Denton" wrote in message
...

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.

It appears Mr. Reid introduced TRSA's into the mix, a point I failed to
note. And it appears that a TRSA is not the same thing as Airport
Surveillance Radar.

So, my statement, in response to the original subject, that the only
Airport
Surveillance Radar on the Chicago Sectional is at Waterloo (ALO) is
correct,
assuming that I found all that were on the chart.

And your statement, in response to the changed subject: "I know of TRSAs
at
Rockford, Illinois, and Muskegon and Kalamazoo, Michigan", is also
correct.


So please pay better attention to the messages you're responding to.