Bendix/King KLN 90B question

YACdirect · Post by **YACdirect** » Thu Mar 15, 2007 12:19 pm

Looking for info from those who fly with a KLN 90B as well. I make it a point to understand as much as I can about things in my airplane so this little tidbit is bugging me more than it would most people. Say I am flying along at 192 knots. Why is it that some times I will see a groundspeed readout of "192 KT" where some other times it is displayed as "192-KT"??? What's the dash for? I have been looking at it for three years - we don't have a manual for the unit - and have been trying to determine a trend or pattern as to when it appears.

I'm stumped.

Any thoughts?

North of You · Post by **North of You** » Thu Mar 15, 2007 12:42 pm

When you see 192 KT it means you are flying forward at 192 knots. When yo see a negative infront of the Kt in means you are going backwards at that given speed. Simple realy....

CID · Post by **CID** » Thu Mar 15, 2007 12:55 pm

It's a software anomaly. Depending on the software version you have the KLN90B occasionally puts a space or a dash between the number and the "KT".

Crazymax · Post by **Crazymax** » Thu Mar 15, 2007 12:57 pm

North of You wrote:When you see 192 KT it means you are flying forward at 192 knots. When yo see a negative infront of the Kt in means you are going backwards at that given speed. Simple realy....

Wow... I don't want to know what the 105 other posts are about...

Galaxy · Post by **Galaxy** » Thu Mar 15, 2007 1:29 pm

I'm more surprised by the fact you don't have a manul for that unit. I guess you must not be using it for IFR ops.

codfish · Post by **codfish** » Thu Mar 15, 2007 1:58 pm

I have never seen a - in front of the g/s

Mode C · Post by **Mode C** » Thu Mar 15, 2007 2:00 pm

I don't have an answer for you but I do have a link to the PDF version of the KLN90B manual

https://www3.bendixking.com/servlet/com ... 0000_1.pdf

If that link doesn't work, PM and I can e-mail you a copy it's 2.17MBs

CID · Post by **CID** » Thu Mar 15, 2007 3:16 pm

Funny. The manual shows a space between the number and the KT in some screeen shots but not the other.

Like I said it's just a software anomaly. Some versions replace the space with a dash. Check out page 3-37.

YACdirect · Post by **YACdirect** » Thu Mar 15, 2007 5:20 pm

Thanks for all your info - what confuses me most is how the dash will be there, then disappear and be replaced with a space? Bizarre. I am sure it has no ill effects on the unit's operation but I was just curious.

Thanks for the link to the manual.

As for not having a manual - we're a VFR only operation so obviously isn't used for IFR, but it sure is nice to have the unit coupled to the autopilot - I can just imagine what a help that would be in a beat up old 'ho or something flying around in the clag. We bought the aircraft (Cessna 210) from North Star Air four years ago and I guess it just didn't come with the manual. I'll ask Bernie next time I'm in for fuel maybe!

Maybe I'll push the boss for a database update, maybe that will cure the anomaly?

Thanks again

Rudderless · Post by **Rudderless** » Thu Mar 15, 2007 5:49 pm

I have a manual at work. I'll check it out tomorrow. I've never actually noticed that before.

corporate joe · Post by **corporate joe** » Thu Mar 15, 2007 8:04 pm

Still-in-YXL wrote:Looking for info from those who fly with a KLN 90B as well. I make it a point to understand as much as I can about things in my airplane so this little tidbit is bugging me more than it would most people. Say I am flying along at 192 knots. Why is it that some times I will see a groundspeed readout of "192 KT" where some other times it is displayed as "192-KT"??? What's the dash for? I have been looking at it for three years - we don't have a manual for the unit - and have been trying to determine a trend or pattern as to when it appears.

I'm stumped. Any thoughts?

I have a few hours with a KLN 90B, and I must admit that I have never noticed that. Could it be some sort of glitch making your particular unit do that, and not a feature of all the the 90B's?

mellow_pilot · Post by **mellow_pilot** » Thu Mar 15, 2007 8:25 pm

North of You wrote:When you see 192 KT it means you are flying forward at 192 knots. When yo see a negative infront of the Kt in means you are going backwards at that given speed. Simple realy....

LOL!!! Ah, that makes my night...

(I really hope you were joking.)

Rudderless · Post by **Rudderless** » Fri Mar 16, 2007 4:06 pm

Checked the manual. It does not make any mention of the indications you observed. Although, funnily enough, the depictions in the manual showing the GS sometimes show "170kts" and sometimes 170 kts". No dash though. Don;t know if they're related. Nobody I asked had noticed the dash before.

Guess that's no help, really.

it'sme · Post by **it'sme** » Fri Mar 16, 2007 4:24 pm

Maybe I'll push the boss for a database update, maybe that will cure the anomaly?

Always a good idea to have an up to date database even for VFR uses but I suspect the earlier poster was refering to a software update. What software version is your unit running with?

YACdirect · Post by **YACdirect** » Fri Mar 16, 2007 6:30 pm

i have no idea what software version it is - i am not too concerned about the dash - just curious as to why its there

Bendix/King KLN 90B question

Bendix/King KLN 90B question

Re: Bendix/King KLN 90B question