Garmin 530 WAAS?

"Sam Spade" wrote in message
...


I don't see any need for air data to make this work. It is a positive
course guidance oval, right? So, make the oval the correct dimensions for
containment in protected airspace. Then, the autopilot, flight director,
or hand-flying pilot will compensate for wind by simply remaining on the
yellow brick road.

My autopilot, S-Tec 55, won't do more than a 90% standard rate turn, and
that is only in the high-gain capture mode. If you make the predefined oval
large enough so that such a turn will get you rolled out on the inbound
course in the presence of a stiff xwind from either side, I suppose you can
make it work. For published holds, the containment airspace is already
defined, and may be constrained in some areas due to adjacent airspace and
ATC considerations.

Stan Prevost wrote:



My autopilot, S-Tec 55, won't do more than a 90% standard rate turn, and
that is only in the high-gain capture mode. If you make the predefined oval
large enough so that such a turn will get you rolled out on the inbound
course in the presence of a stiff xwind from either side, I suppose you can
make it work. For published holds, the containment airspace is already
defined, and may be constrained in some areas due to adjacent airspace and
ATC considerations.


Restraintt of holding patterns for ATC purposes is very limited, the
most common being using 210 knots in place of 230 knot patterns.

Sam Spade wrote:

So far as I know, although a lot of them used (and still do with the
older birds) DME/DME updating, none of them used VOR/DME updating...well
unless that was all that the system could see...and often it would just
stay with IRU position rather than use a bad solution.


Yes, airline FMSs are capable of VOR/DME and DME/DME updating, but you are correct that these
modes don't get used much with GPS equipage.

Mike

I have read the GNS430W manual and didn't see anything about positive course
guidance around a hold. I may have skipped a few words.


"Sam Spade" wrote in message
...
Stan Prevost wrote:



My autopilot, S-Tec 55, won't do more than a 90% standard rate turn, and
that is only in the high-gain capture mode. If you make the predefined
oval large enough so that such a turn will get you rolled out on the
inbound course in the presence of a stiff xwind from either side, I
suppose you can make it work. For published holds, the containment
airspace is already defined, and may be constrained in some areas due to
adjacent airspace and ATC considerations.


Restraintt of holding patterns for ATC purposes is very limited, the most
common being using 210 knots in place of 230 knot patterns.