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

"Jeff Saylor" wrote in message
...

Nantucket has the only (R) in Cape Approach's coverage area.


Otis ANGB has an (R), and I believe that's where Cape Approach is located.



Does this mean that the only radar antenna for Cape
Approach's coverage area is at Nantucket? I ask because there
is a large radar antenna in Truro, Mass (Cape Cod). On the
sectional, it even says "radomes" as a landmark feature near Truro.
Perhaps this antenna is for Cape Approach, although I suppose it
could be for Boston Center, weather, or who-knows-what. If it
is indeed a Cape Approach antenna perhaps it would be useful to
have the R on the chart.


That's the North Truro ARSR site, and former North Truro Air Force Station.
It's used by Boston and New York ARTCCs.

"Steven P. McNicoll" wrote:

"Jeff Saylor" wrote in message
...

Thanks for the explanation, although I haven't found any more or
less radar services to be available at KACK (Nantucket, w/ the
R symbol) than at KMVY (Vineyard Haven) or even KPVC,
which was why I am curious.


The symbol indicates where the ASR is located, of course radar services are
available at other airports within range. Typically 30 miles or more.

According to a NTSB report* on the TWA 800 accident, NY TRACON has 5 radars
located at JFK airport, Newark, NJ airport (EWR), Islip, NY airport (ISP), White
Plains, NY airport (HPN), and Stewart Field airport in Newburg, NY (SWF).

JFK, EWR, ISP are in Class B or C airspace. Stewart (Class D airspace) has the
R in a circle.
White Plains does not have the R in a circle symbol.

Is there any particular reason why White Plains does not have this symbol if it
has radar?

* http://www.ntsb.gov/events/TWA800/exhibits/Ex_13A.pdf

"Jeff Saylor" wrote in message
...

According to a NTSB report* on the TWA 800 accident,
NY TRACON has 5 radars located at JFK airport, Newark,
NJ airport (EWR), Islip, NY airport (ISP), White Plains, NY
airport (HPN), and Stewart Field airport in Newburg, NY (SWF).

JFK, EWR, ISP are in Class B or C airspace. Stewart (Class D
airspace) has the R in a circle.
White Plains does not have the R in a circle symbol.

Is there any particular reason why White Plains does not have
this symbol if it has radar?


None that I'm aware of. Perhaps it's because the HPN ASR isn't located on
the field proper. It's very close, it's just a bit south of the general
aviation parking area that's west of hangar E, between Tower and Wolfe
Lanes. But that doesn't seem like a significant distance, and the ASR at
SWF is sited similarly but does have the R.