Just curious, have Cessnas ever used a Bendix King 568 CDU and computer?

[WarlockD]

I have bought a few of these CDU's over the years when they appear dirt cheap on eBay and even got the computer with it. I cannot do much as the computer stores the flight information in static ram and you need a disk to update it but its a fairly conventional system. The CDU is just a Z80 CPU that acts as a terminal and the computer is just a Z8000 with a bunch of ram.

But as I look around at different aircraft panels I never see one that uses it. I am sure its used in big 2 prop planes but even the few images I have seen online just cannot figure out where it was ever used. Just curious if you know how popular it ever was.

Oh, if you want manuals I got them, I have started to be a fan of Bendix King because some of those patents are just crazy good. Like someone was really proud of the work put in. Need to get my document scanner up.

[CaptainBobSim]

I haven't seen any 172s using them, I'd be really curious to! It's so fun looking into the manuals and seeing all of the genius that happens behind the scenes :)

[WarlockD]

You should dig into their patents. They put EVEYTHING in it. Indicator for distance measuring equipment - US3533060A for the KDI-570. I got interested in it because it seems it uses the same type of rotating number display that the Gemini rocket program used for their computer. I spent 90 bucks on the manual but the patent explains everything about how it works and decodes the numbers. I think the original engineer was quite proud of it.