Hi,

PMJI...

Recently, Jeff Saylor posted:
"Steven P. McNicoll" wrote:

The blue R in a circle symbol is used to indicate the presence of
ASR where there is no other indication. It would be superfluous at
the core airports in Class B and C airspace and TRSAs. It doesn't
matter where the approach control facility is located.

Ok, I get that, but what makes this information useful to the pilot?
For example, what is available to a pilot landing at Nantucket (Class
D, Cape Approach, R-in-circle) that is not available at Vineyard
Haven (Martha's Vineyard with Class D, Cape Appraoch, No
R-in-circle)? Both airports have a number of approaches, including
ILS that controllers can vector pilots to.

Steven gave a useful response by stating that "It doesn't matter here the
approach control facility is located." All the pilot needs to know is who
to talk to. This information is listed in a legend on the back of the
chart. ;-)

Neil