A link to your 3 documents was posted on another forum. It looked interesting so I down loaded them and started flipping through the docs. On page 3 of the Pratt & Whitney PT6A – Small Engine Control System doc is a picture of a King Air panel that I thought looked familiar. It is in fact a photo of my panel from my C90 King Air from a few years ago. I have posted it several times on the web and am glad to see that it is being used for a worthy purpose