Years ago I worked with a German fellow named Gunther Kirschstein at IBM. I lost track of him when I transferred and have been trying to locate him for years. I noticed that he was the Flight Dynamics guy on many planes in the files. He dropped out of site about ten years ago. Did anyone ever know him or have any idea where he may have gone? He was from Stuttgart and quite an aviator. Sure would like to find him.

I suggest to try contacting Andreas Becker at sim-outhouse, he appears to have been working with Gunter as recently as 2013. I PM'ed some additional info.