Out of eight SubSonex registered as of the start of this year....

One is Experimental R&D (owned by Sonex)
Three are Experimental Amateur-Built
Three are Experimental Exhibition (two owned by Sonex)
One doesn't list a Certification category (N94DE)

Makes you wonder why the one guy went E-Exp when EAB is apparently attainable. I'm guessing it was one of the first builder-flown examples.

Ron Wanttaja