KLN94 Question

Bill wrote:
The box checks gps altitude vs the encoder altitude for sanity.
All the King boxes do this. So you will probably have to enter
the altimeter setting to get the approach to go active.

The 94 is a very nice box; many features of the 430s at a lower
price. Includes ILS approach guidance.

To bad there's no way to drop it in a 90B slot!

Bill Hale BPPP instructor


On Apr 17, 2:59 pm, kevmor wrote:

I'm learning to use the KLN94 IFR GPS and was wondering about using
the ALT button to set the current altimeter setting. I can see why it
would use this for VNAV, but is it required to set it for normal non-
precision approaches? I think the only thing I've read in the manual
so far was it helps to get the RAIM check done faster or something
like that.




I thought the 90B would drop in to the 89B and the 94 would do the same.
Bummer....

--

Regards, Ross
C-172F 180HP
KSWI

Peter wrote:

kevmor wrote

I'm learning to use the KLN94 IFR GPS and was wondering about using
the ALT button to set the current altimeter setting. I can see why it
would use this for VNAV, but is it required to set it for normal non-
precision approaches? I think the only thing I've read in the manual
so far was it helps to get the RAIM check done faster or something
like that.

Coming late into this thread...

I have a KLN94, and a KMD550.

*AFAIK* the KLN94 uses the altitude encoder input for only *one*
purpose, and that is RAIM checking if it is receiving less than 4 (or
5?) satellites. Once it is receiving sufficient satellites, the alt
input is ignored.

There is a crude VNAV calculator in the KLN94 which I believe uses the
current GPS altitude, but it could be an exception to that I am
saying.

I have the installation and/or maintenance manuals for the KLN94 -
email me if you would like a copy. It should answer most of the tech
(if not the operating) questions.

Both are available online. Here's the relevant section:

"The KLN 94 functions which use the altitude input are special use
airspace (SUA) alerting, altitude alerting, vertical navigation (VNAV),
and the GPS approach mode. It is a good idea to update the altimeter
baro setting on the ALT 1 page each time you make a change to the
aircraft's altimeter setting."

email: peter at peter2000 dot co dot uk

It's a great GPS for typical enroute GPS usage, plus it displays the
final approach track on conventional approaches, enabling e.g. an NDB
approach to be flown inbound using the GPS / autopilot. I am not sure
how it works for a full US-style GPS approach but we don't have any
over here anyway.

It's also great for full US-style GPS approaches.

--
Don Poitras

Peter wrote:
(Don Poitras) wrote


Both are available online. Here's the relevant section:


Where?


It's also great for full US-style GPS approaches.


I am OK with it for the approach itself, but how does the waypoint
sequencing work after the MAP?

Not sure about the 94, but my 89B will not sequence past the MAP by
design. You have to envoke it. It is ready in the display for you.

--

Regards, Ross
C-172F 180HP
KSWI

Peter wrote:

(Don Poitras) wrote

Both are available online. Here's the relevant section:

Where?

Do a Google for ""kln 94 pilots guide". First hit.
Ditto '"Avionics Library" bendix-king' (without the single quotes). Second
hit, dig down.

I don't verify the accuracy or legality of either of these, but I'm
sure with some digging you could find more.

It's also great for full US-style GPS approaches.

I am OK with it for the approach itself, but how does the waypoint
sequencing work after the MAP?

From the book:

"To perform the published missed approach procedure, press D- to bring
up the direct-to page. The default waypoint will usually be the first
waypoint of the missed approach procedure."

"Confirm this waypoint as the direct to waypoint and press ENTER."

--
Don Poitras

At time of installation, the Maintenance 7 (MNT 7) page should have
been set. Enhanced RS232 data output is selected when a KMD550 is
connected, provided there are no other devices on the same RS232 bus.
The Enhanced RS232 data output includes extra (and as I understand it,
BK-specific and non-standard) output for the display of curved
segments.



On Fri, 04 May 2007 07:48:13 +0100, Peter
wrote:
One Q, since you seem to know this stuff: is there *any* way to get a
KMD550 to display arcs, from the KLN94 database? Mine only ever
displays straight lines, and STARs/SIDs tend to look unrecognisable.

Peter wrote:

(Don Poitras) wrote

Peter wrote:

(Don Poitras) wrote

Both are available online. Here's the relevant section:

Where?

Do a Google for ""kln 94 pilots guide". First hit.
Ditto '"Avionics Library" bendix-king' (without the single quotes). Second
hit, dig down.

I don't verify the accuracy or legality of either of these, but I'm
sure with some digging you could find more.

Yes, excellent. I have my own slightly bigger collection but this one
is interesting.

It's also great for full US-style GPS approaches.

I am OK with it for the approach itself, but how does the waypoint
sequencing work after the MAP?

From the book:

"To perform the published missed approach procedure, press D- to bring
up the direct-to page. The default waypoint will usually be the first
waypoint of the missed approach procedure."

"Confirm this waypoint as the direct to waypoint and press ENTER."

So you get the 1st WP of the missed approach, only?

No, you get the entire missed approach to the hold. They make you hit
D- because often you need to fly a certain heading and/or reach
a certain height before turning to the first missed approach waypoint.

One Q, since you seem to know this stuff: is there *any* way to get a
KMD550 to display arcs, from the KLN94 database? Mine only ever
displays straight lines, and STARs/SIDs tend to look unrecognisable.

I don't own a KMD550, but I see someone else has answered this.

--
Don Poitras