Holds on autopilot?

BT writes:

People do care about timeing in the holding pattern, time is set to one
minute on the inbound leg, (1.5 min at higher altitudes) to for "protected
airspace", this protected airspace is to protect you from other traffic or
terrain in a non radar enviroment.

I distinctly remember, when I was little, seeing a drawing that showed
aircraft in what appeared to be a holding pattern (an oval track
around a fix), and at different levels, with each aircraft dropping
one level on each trip around the pattern. I understood that aircraft
were "stacked" this way while waiting to land. Is that no longer
done? I don't see any mention of it in any of the sources I've
consulted. Or perhaps I remembered something incorrectly? Maybe it
was never done (?). It sounds a bit risky.

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"Mxsmanic" wrote in message
...
BT writes:

People do care about timeing in the holding pattern, time is set to one
minute on the inbound leg, (1.5 min at higher altitudes) to for
"protected
airspace", this protected airspace is to protect you from other traffic
or
terrain in a non radar enviroment.

I distinctly remember, when I was little, seeing a drawing that showed
aircraft in what appeared to be a holding pattern (an oval track
around a fix), and at different levels, with each aircraft dropping
one level on each trip around the pattern. I understood that aircraft
were "stacked" this way while waiting to land. Is that no longer
done? I don't see any mention of it in any of the sources I've
consulted. Or perhaps I remembered something incorrectly? Maybe it
was never done (?). It sounds a bit risky.

--
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It is done that way.. but what protects them laterially from adjacent or
crossing airways, other holding patterns, or terrain at low altitude in a
non radar environment.
BT

In article ,
Mxsmanic wrote:

How do you do it with the GNS480? Is it possible with a GNS530? I've
looked in the manual but I don't see anything that explains how to do
it.

Garmin did not design the GNS480, so none of the Garmin designs
incorporate that feature.

Mxsmanic wrote:
Ron Natalie writes:

Holds are the perfect time for the autopilot. Usually, I do them in
HDG mode, but the GNS480 will steer the autopilot around the hold
in GPSS mode (either as a part of a charted approach, or you can
just throw a hold in at any waypoint)

How do you do it with the GNS480? Is it possible with a GNS530? I've
looked in the manual but I don't see anything that explains how to do
it.

If you are in an approach, it will fly the hold once automatically. If
you press SUSP in the hold, it will fly around the hold indefinitely.

Otherwise, you can press DIRECT and then HOLD and it prompts you for
the course and leg length.

I don't know what the traditional Garmin stuff is capable of.

john smith writes:

Garmin did not design the GNS480, so none of the Garmin designs
incorporate that feature.

And yet they sell it? What's the story behind that? I thought Garmin
designed all their stuff (even if they have it manufactured in
Taiwan).

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In real life holding is about as common as being hit by lightening.
Even when you do get a hold its usually just a vectored hold, not a
formal procedures. The only time you really get to fly holds is to
remote airports without ATC when the approach procedure requires a hold
for the procedure turn.

-Robert

I fly regional jets in the Northeast and I get assigned "hold as
published" on a regular basis; particularly going into JFK at rush
hour, or in any low IFR weather. PVD is another popular holding fix
when going into BOS. And yes we always program a hold into the FMS and
often back it up with conventional navigation whenever possible.

"I've read that holds have become very rare since ATC adopted the
policy of spacing flights from their departure points rather than en
route. "

You want to come and visit Heathrow some time - there are four holds,
and they get used.

Bernie writes:

You want to come and visit Heathrow some time - there are four holds,
and they get used.

I was thinking of the U.S.; things are different in Europe.

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Mxsmanic wrote:
john smith writes:

Garmin did not design the GNS480, so none of the Garmin designs
incorporate that feature.

And yet they sell it? What's the story behind that? I thought Garmin
designed all their stuff (even if they have it manufactured in
Taiwan).

Garmin bought UPSAT (formerly known as Apollo) after UPSAT
designed the 480 (which UPSAT called the CNX80) and the MX20
(which has evolved into the GMX200) and the SL-30 and SL-40
NAV/COM and COM. All of which (with the exception of the
original MX20) are still Garmin products.

In article ,
Mxsmanic wrote:

john smith writes:

Garmin did not design the GNS480, so none of the Garmin designs
incorporate that feature.

And yet they sell it? What's the story behind that? I thought Garmin
designed all their stuff (even if they have it manufactured in
Taiwan).

Garmin bought Apollo Avionics from UPS a few years back. If I remember
correctly the 480 was originally an Apollo product.