I can just about almost play this now. I tried recording it properly a couple of times before but gave up. This is just grabbed after recording some flight sim stuff! ... https://www.youtube.com/watch?v=jLSPzFE2_Uw
The Flight Director. For a good description of the real-world AP-106 autopilot, check the following link. (Note: this is an extract from the manual for a Beech C-12, but all the autopilot description is relevant.)
http://aviationandaccessories.tpub.com/TM-1-1510-218-10/css/TM-1-1510-218-10_267.htm
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https://www.youtube.com/watch?v=Gtixjgs6d4c
My impressions of the RW Designs Twin Otter and of how it flies in X-Plane 11. [Takeoff at 15:00. Autopilot analysis at 35:00]
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https://www.youtube.com/watch?v=YtN_ISwb_dU