In article ,
"Jim Burns" wrote:

I "tried" to read that AC... it is the biggest collection of gibberish that
the FAA has published in a long time. If anybody in the group needs a real
big headache, give it a shot, then report back to the group with your
conclusion.
Jim

some things to consider:

1) AC 90-100A only cancels 90-100. It doesn't cancel
AC 20-130A, for example, or any of the AIM.

2) The AC is for RNAV routes. This does not conflict with the
AIM paragraph on using an appropriately certified GPS installation
in lieu of a VOR, DME, or ADF for non-RNAV routes.

3) Historically, the FAA does not update advisory circulars that also
de-certify the airworthiness of existing equipment, including the
authorization to use it. If they did, the various alphabet soups and
aviation companies would NOT participate in developing new
standards, etc.

--
Bob Noel
(goodness, please trim replies!!!)