Sorry to be late on this subject, but would someone please confirm or deny that the SR20 has to have the BRS chute to be legal to fly
Yes, that’s correct. The aircraft was certified with the parachute, and if the chute is removed, it is no longer airworthy because it no longer meets its certified configuration.
because the aircraft cannot pass the FAA spin tests and is not considered spin resistant ???
No, this is not true. The aircraft was given an exemption by the FAA from the full range of spin testing because the parachute was demonstrated to provide an equivalent level of safety. This does not mean that it cannot pass the spin tests (indeed, from the reports I’ve heard, it would probably have little difficulty - it is apparently quite hard to spin).
The benefit to Cirrus of not doing the full range of spin testing is simply cost and time - it saved them having to do quite a lot of work.
If this is the case, how often does the chute have to be removed and inspected to remain legal,
From memory, the chute has to be inspected after 5 years, and the rocket replaced after 10 years. There are no other maintenance requirements.
and is there a program to redesign the wing to comply with spin resistance or to pass the requirements to allow flight w/o the BRS. ??
No there is not (nor would it be necessary, just to demonstrate spin resistance). Why would there be? Who in their right mind would not want to have the chute?
It’s my understanding, and I’m open to knowledgeable correction on this issue, that the Columbia 300 has demonstrated spin resistance, but required both a rudder travel limiter and a restricted CofG range to achieve this.
I did notice on the type certificate data sheet for the Columbia that it, too, has been exempted from certain of the FAR23 stall and spin requirements by an Equivalent Level of Safety determination. I don’t have any details on what that involved.
I also noticed that the http://www.airweb.faa.gov/regulatory_and_guidance_library/rgMakeModel.nsf/0/d05bbd046f22c629862568f10044d7c0/$FILE/a00003se.pdfColumbia type certificate data sheet specifies an airframe life limit of 1200 flight hours (yes, 1200!) No need to worry if your engine will make TBO! Surely that’s a typo.