Help Identify this CDI ?

Indiana_Pilot

Line Up and Wait
Joined
Nov 2, 2013
Messages
802
Location
Connersville, IN
Display Name

Display name:
Flying "B"
I either have a Bendix King KI 209 or a KI 209A (the A being GPS compatible)

I have been through my logs over and over and cannot find it in there.. (that scares me too as I was certain I seen it in there before)

Are there any ways to determine what model it is without removing it? it is to hard to see up behind the panel for a model/serial #.

They are identical in appearance except I guess one has an external connection for a switch to bypass the ILS/LOC converter for GPS use. I am trying to piece together a IFR GPS install for RNAV approaches :)

Any ideas ?
 
Are there any ways to determine what model it is without removing it? it is to hard to see up behind the panel for a model/serial #.

Is there room to reach up behind it with a smart phone? Take a little video in the area and you might catch a view of the data tag.

$_1.JPG
 
Good idea... Maybe I should finally break down and buy a borescope for stuff like this! Thanks !


Sent from my iPhone using Tapatalk
 
I either have a Bendix King KI 209 or a KI 209A (the A being GPS compatible)

I have been through my logs over and over and cannot find it in there.. (that scares me too as I was certain I seen it in there before)

Are there any ways to determine what model it is without removing it? it is to hard to see up behind the panel for a model/serial #.

They are identical in appearance except I guess one has an external connection for a switch to bypass the ILS/LOC converter for GPS use. I am trying to piece together a IFR GPS install for RNAV approaches :)

Any ideas ?

It should be on the aircraft's equipment list...
 
Good idea... Maybe I should finally break down and buy a borescope for stuff like this! Thanks !


Sent from my iPhone using Tapatalk

No need for a borescope. Look at the connectors. A smaller squareish is a 209. A wide flat connector is a 209A (assuming it a 209 as other models have the flat one too)

All the 209s have a swinging needles (not rectilinear movements)
 
It should be on the aircraft's equipment list...

Chortle.

Anyhow, back in the day I was impressed by the inventory lady from the university who carried her inspection mirror around with her to read serial numbers off the back of equipment she was tasked to find.

I've used the iPhone photo technique to grab the part number off my kitchen cooktop so I could order a replacement knob for it (also saves having to write it down).
 
I'm guessing that a GPS cannot drive a CDI through the VOR/LOC composite only indicators?
 
I'm guessing that a GPS cannot drive a CDI through the VOR/LOC composite only indicators?

Most GPS (along with radios like the KX-165 and the KNS80) outputs are designed to deal with resolvers (like an HSI or the KI-206/7). The KI 208/209 are designed for the radios like the KX-155 that lacks the converter built in. The "A" versions are an odd hybrid between the two to allow you to switch between the two (this was developed at an odd time in the history of IFR GPS where such things were sort of required).
 
Most GPS (along with radios like the KX-165 and the KNS80) outputs are designed to deal with resolvers (like an HSI or the KI-206/7). The KI 208/209 are designed for the radios like the KX-155 that lacks the converter built in. The "A" versions are an odd hybrid between the two to allow you to switch between the two (this was developed at an odd time in the history of IFR GPS where such things were sort of required).

Looking at the GTN, it has both composite and the resolver. The 209 is on the interconnect wiring diagrams. Still need the 209A? That's where I'm lost.

I was under the impression you only need the 209A when interfacing a composite only nav radio with an autopilot.
 
Last edited:
It does, but you lose the feature of having it know what your OBS is set to if you do.
 
It does, but you lose the feature of having it know what your OBS is set to if you do.

Oh. I always hit the "direct to" and enter button. I don't hold an instrument rating or have IFR GPS yet so some of this stuff is foggy.
 
Is there room to reach up behind it with a smart phone? Take a little video in the area and you might catch a view of the data tag.

$_1.JPG

That's a 209







This is a 209A. Way more contacts. Slide-lock type latching connector.

 
Last edited:
Yup, says KI 209 right on it.

And it says KI 209A right on it too.
Your eyes are way better than mine.

And if you are looking up behind a panel with a mirror, or trying to catch the data plate with a video of the area, it would be MUCH easier to identify it visually than to be able to read the inscription.
 
Your eyes are way better than mine.

I'll take your word for that.

And if you are looking up behind a panel with a mirror, or trying to catch the data plate with a video of the area, it would be MUCH easier to identify it visually than to be able to read the inscription.

Reading the inscription is identifying it visually.
 
Reading the inscription is identifying it visually.
True,

And knowing that you would be the one responding, I thought that perhaps I should be a bit more exact in my statement. But I thought that specifically mentioning "reading the inscription" as being more difficult would make it clear what I meant.

But I do appreciate and enjoy your usual technical reading of people's statements and syntax. In that regard, you remind me of my wife. She is quite OCD about things like that too.
 
But they can be identified by reading a thing....

All too often placards , data plates, tags, stickers are missing or illegible. Then some are covered up by the aircraft manufacturer's or repair shop's sticker. The KI208/209 install manual was released <1988, I have to imagine there are a fair amount of instruments out there where those tags would be difficult to read.
 
Last edited:
All too often placards , data plates, tags, stickers are missing or illegible. Then some are covered up by the aircraft manufacturer's or repair shop's sticker. The KI208/209 install manual was released <1988, I have to imagine there are a fair amount of instruments out there where those tags would be difficult to read.

But if they can be read they can be identified....
 
Oh, let's argue about whether or not it is "easy" to read a number off a label.
This is what I used to tell my kids:

No more laughing no more fun
First one to laugh or crack a smile
Has to run a half a mile!
 
No need for a borescope. Look at the connectors. A smaller squareish is a 209. A wide flat connector is a 209A (assuming it a 209 as other models have the flat one too)

All the 209s have a swinging needles (not rectilinear movements)

Harbor Freight has a digital inspection camera that would be great for stiff like this. $180.
 
Harbor Freight has a digital inspection camera that would be great for stiff like this. $180.

I'd rather use my phone than buy another tool. I've back drilled holes through stuff using it and it cost nothing.
 
I've got a Milwaukee one. I found it amusing that the manual warns you it is not a medical device. Of course the first thing people tend to do with it is to look in your mouth or ear with the thing.
 
I've got a Milwaukee one. I found it amusing that the manual warns you it is not a medical device. Of course the first thing people tend to do with it is to look in your mouth or ear with the thing.

I did my own colonoscopy with one.
 
Back
Top