There are alot of things that Experimental allows for that certified aircraft do not. I just think that if it is allowed, but not allowed in the certificated side of things that we should emulate them. From a legal sense one may be ok. But as Dana said, your insurance company may feel differently. I also would feel very much in the dark if such endorsements, check out and ratings were required to fly similar aircraft, and I didn't have one while attempting to fly my own. A well designed centerline thrust twin would be a very practical thing for low time pilots and offer a great measure of safety. The Adam aircraft has to have an indicator light tell you you have lost an engine because there is next to no response from the airplane, except a slight loss of airspeed. It truly is something worth thinking about... Colin & Bev Rainey KR2(td) N96TA Sanford, FL crain...@cfl.rr.com or crbrn9...@hotmail.com http://kr-builder.org/Colin/index.html