Garmin 430 rquestion- does the approach always have to be activated via "activate approach"?

One annoyance of the 430 is that activating an approach will
immediately set a course for the selected IAF (assuming RV not
selected). What I would like to do is append the approach to my
current flightplan so that I can transition en route to the approach
without further programming. But I'm concerned that a loaded,
unactivated approach will cause the 430 not to switch to approach
senstivity. I tried this in the simulator and found that it seems to
work fine, the sensitivity changes 2nm from the FAF and all is well;
but I'm hesistant to start using the method in the A/C.
Can someone else verify that it is ok? What method do you use?

So you are f lying along, direct KABC. You have loaded an approach and
selected an IAF. How do you expect the box to know when to switch from
having the TO Waypoint being the airport to having it be the IAF?

Activating a loaded approach is really a trivial action. PROC, ENTER. Not
exactly programming.






"Terence Wilson" <tez@latte.com> wrote in message
news:5vpcr3hntselerldjpuuh80elgpnl253d6@********...
> One annoyance of the 430 is that activating an approach will
> immediately set a course for the selected IAF (assuming RV not
> selected). What I would like to do is append the approach to my
> current flightplan so that I can transition en route to the approach
> without further programming. But I'm concerned that a loaded,
> unactivated approach will cause the 430 not to switch to approach
> senstivity. I tried this in the simulator and found that it seems to
> work fine, the sensitivity changes 2nm from the FAF and all is well;
> but I'm hesistant to start using the method in the A/C.
> Can someone else verify that it is ok? What method do you use?

Terence Wilson wrote:
> One annoyance of the 430 is that activating an approach will
> immediately set a course for the selected IAF (assuming RV not
> selected). What I would like to do is append the approach to my
> current flightplan so that I can transition en route to the approach
> without further programming. But I'm concerned that a loaded,
> unactivated approach will cause the 430 not to switch to approach
> senstivity. I tried this in the simulator and found that it seems to
> work fine, the sensitivity changes 2nm from the FAF and all is well;
> but I'm hesistant to start using the method in the A/C.
> Can someone else verify that it is ok? What method do you use?

You don't quite understand the activate approach function. It should
seldom be used. It's primary purpose is for a "pop up" VFR operation to
go from VFR directly to an IAF and begin a full approach.

The normal procedure is to load the approach. It will always activate
on its own two miles prior to the FAF.

On Fri, 15 Feb 2008 23:04:53 -0600, "Stan Prevost"
<sprevost@knology.net> wrote:

>So you are f lying along, direct KABC. You have loaded an approach and
>selected an IAF. How do you expect the box to know when to switch from
>having the TO Waypoint being the airport to having it be the IAF?
>
>Activating a loaded approach is really a trivial action. PROC, ENTER. Not
>exactly programming.

The point is this- loading the approach makes the IAF the active
waypoint, which I may or may not want.

On Sat, 16 Feb 2008 06:38:42 -0800, Sam Spade <sam@coldmail.com>
wrote:

>Terence Wilson wrote:
>> One annoyance of the 430 is that activating an approach will
>> immediately set a course for the selected IAF (assuming RV not
>> selected). What I would like to do is append the approach to my
>> current flightplan so that I can transition en route to the approach
>> without further programming. But I'm concerned that a loaded,
>> unactivated approach will cause the 430 not to switch to approach
>> senstivity. I tried this in the simulator and found that it seems to
>> work fine, the sensitivity changes 2nm from the FAF and all is well;
>> but I'm hesistant to start using the method in the A/C.
>> Can someone else verify that it is ok? What method do you use?
>
>You don't quite understand the activate approach function. It should
>seldom be used. It's primary purpose is for a "pop up" VFR operation to
>go from VFR directly to an IAF and begin a full approach.
>
>The normal procedure is to load the approach. It will always activate
>on its own two miles prior to the FAF.

OK thanks. That was the source of my confusion. I wasn't sure whether
there was something magic about activation. It sounds like the only
purpose of activation is to set the IAF as the active waypoint.
Thanks.

On 2/16/2008 10:27 AM, SimGuy wrote the following:
>
> The point is this- loading the approach makes the IAF the active
> waypoint, which I may or may not want.

No, it doesn't.

Terence,

> It sounds like the only
> purpose of activation is to set the IAF as the active waypoint.
>

Hmm. You have me very confused now. What's wrong with the IAF, if
that's where the full approach starts (you mentioned no RV)?

--
Thomas Borchert (EDDH)

On Sat, 16 Feb 2008 18:49:42 +0100, Thomas Borchert
<borchert_thomas@************> wrote:

>Terence,
>
>> It sounds like the only
>> purpose of activation is to set the IAF as the active waypoint.
>>
>
>Hmm. You have me very confused now. What's wrong with the IAF, if
>that's where the full approach starts (you mentioned no RV)?
>
>--
>Thomas Borchert (EDDH)

Well suppose I am enroute and approaching the SGD VOR. At this point I
am getting close to my destination and want to setup the KCCR VOR
approach which starts at the CCR IAF. If I load and activate the
approach a megenta line will immediately be drawn from my present
position to CCR. Want I want is the route SGD, CCR ... KCCR.

Terence,

> Well suppose I am enroute and approaching the SGD VOR. At this point I
> am getting close to my destination and want to setup the KCCR VOR
> approach which starts at the CCR IAF. If I load and activate the
> approach a megenta line will immediately be drawn from my present
> position to CCR. Want I want is the route SGD, CCR ... KCCR.
>

I see. In that case, what's wrong with loading the procedure and then
waiting with activation until passing SGD.

Also, upon rereading the 430 manual I noticed that activating
vectors-to-final will always get you to the FAF. I could find no mention
of the automatic activation mentioned by someone. However, automatic CDI
switching (to VLOC) will only happen on an activated procedure, it
seems.

--
Thomas Borchert (EDDH)

Thomas Borchert wrote:
> Terence,
>
>
>>Well suppose I am enroute and approaching the SGD VOR. At this point I
>>am getting close to my destination and want to setup the KCCR VOR
>>approach which starts at the CCR IAF. If I load and activate the
>>approach a megenta line will immediately be drawn from my present
>>position to CCR. Want I want is the route SGD, CCR ... KCCR.
>>
>
>
> I see. In that case, what's wrong with loading the procedure and then
> waiting with activation until passing SGD.
>
> Also, upon rereading the 430 manual I noticed that activating
> vectors-to-final will always get you to the FAF. I could find no mention
> of the automatic activation mentioned by someone. However, automatic CDI
> switching (to VLOC) will only happen on an activated procedure, it
> seems.
>
VLOC is only for ILS and LOC, not RNAV