CraigW wrote: >If that is true and you make a major change like going from a VW to > a Corvair do you have to go back to Phase 1?
I'm not sure what the duration would be for a completely different engine, but I hear "five hours" thrown around a lot for a "major change", and 20 wouldn't surprise me. When I went from my 3100cc back to a 2700cc Corvair, I called the FSDO and they said "don't bother us about that little change or a propeller change, but if you change to a completely different type of engine, call us back". I think it depends a lot on what's written in your "operating limitations", and probably even more on who answers the phone at the FSDO! From an FAA website: Each aircraft issued an experimental airworthiness certificate has operating limitations attached. During flight-testing, specific limitations (phase 1) are prescribed for you to show the aircraft is capable of safe flight (compliance to 14 CFR section 91.319 "Aircraft having experimental certificates - Operating limitations".) After successful flight-testing more liberal (Phase II) operating limitations become effective. Examples of operating limitations for amateur-built aircraft are in Order 8130.2, "Airworthiness Certification of Aircraft and Related Products". _______________ Mark Langford ML at N56ML.com http://www.n56ml.com
