Crotch strap, tso
Jeff,
I retrofit the Van's crotch strap kit which is for 7s, 9s into my 6A. You have to figure out the dimensions and location but if you built a 6, not having pre-made holes or lots of instructions won't deter you. Make sure it is far enough back so that the crotch strap won't fall into the well where the control stick is if it comes loose. It pretty much fits where it fits. The strap bracket has to be redrilled.
The Crow harnesses are (of course) not TSO'd. Experimental aircraft hve never been required to have TSO'd seat harnesses but the FAA has tightened up their recommendations in the last several years. You should have good documentation on your equipment.
I did some extensive research through the alphabet soup regulations, contacted EAA, blah, blah, etc. before going with Crows. The web breaking strength and hardware of Crows well exceed the minimum requirements for certified aircraft and they are certified by one or two auto racing organizations. I think the airframe would probably fail before the Crows did. I went over the top and got certs for the webbing from Crow when I got mine but its not necessary.
Refs, if you have a lot of time on your hands:
FAA AC90-89
FAA order 8130.2
FAR 21.1
FAR 23.1 inc (b)
FAR 91.205
FAR 91.191(g)
AC 20-27
TSO-C22g
SAE AS 8043
Dave A.
6A build
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