River City
Follow this link to an FAA Publication entitled "Plane Sense". It provides an explanation of the various US FAA Airworthiness Certificates. The actual regulations are contained in CFAR Part 21 (21.191 Experimental Certificates). Most FAA regulations, advisory circulars and handbooks can be found at
www.faa.gov .
http://www.awp.faa.gov/fsdo/docs/spm...w/plane_~1.pdf
Best Regards, Rich Lee