On Thu, 20 May 2004 05:35:50 -0700, wrote:

"RADAR REQUIRED" can be for any number of reasons. One of them is:

8260.19C, Para 855: Where radar is the only method for procedure entry from
the en route environment, enter the following: Chart planview note: RADAR
REQUIRED.

You cannot use that NDB beyond 15 miles unless they see you on radar. You say
they lose radar below 4,000,

No, they don't lose radar -- but they do lose direct radio communications.
Communication is still possible, although cumbersome, through a FSS.


but presumably you're within 15 miles before they
let that happen. The note is appropriate in view of the lack of facilities
supporting the IAP. It is not Boston Center that is the final authority on
that note, it is the IAP folks.

The fact you're using GPS is beside the point because it is an overlay IAP.
Perhaps it shouldn't be beside the point, but it is because it's an overlay.


They don't make special notes for overlay use of a ground-based IAP.

OK. I did think it might have something to do with the inability to make a
differentiation since it is an overlay and not a stand-alone procedure. I
wonder how hard it will be to split it off as a stand-alone procedure.
I'll give a call to the procedure specialist in Mass.

Thanks.



Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)