On Mon, 13 Mar 2006 22:54:03 GMT, "Steven P. McNicoll"
wrote:


"Peter Clark" wrote in message
.. .

I chose it because it's the point where the rest of the required
information (distance to maintain from and radial crossing) is derived
from.


The I-DRO localizer provides distance information?

Who knows, the arc is based off the VOR/DME transmitter. I believe I
corrected that oversight in a later response.

For the arc portion of the DRO approach, no - the DRO VOR serves the
same purpose for that approach until hitting the lead radial.


What navaid provides lateral guidance on the final approach course at DRO?
What navaid provides lateral guidance on the final approach course at MTN?

None. Distance is from the VOR/DME transmitters, or in the case of an
ILS/DME the I-whatever. For these approaches I'm substituting the
GPS distance readout instead of having an actual DME box and using the
VOR head to drive the CDI for cross radials. Flying a DME arc is
specifically listed as a permitted operation in the AIM
1-1-19(f)(1)(a)(2).

Here's a link to an approach at Antigo, Wisconsin:

http://www.myairplane.com/databases/...s/06215N16.PDF

Can GPS substitute for ADF on this approach? Please explain your answer.

No, because there's no GPS overlay.