On 10/24/2015 7:17 AM, CraigW via KRnet wrote: > So let me pose > a question. 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?
Yes. The specifics will be written in your operating limitations. For example, for my 1999 Glastar it says: "The cognizant FAA office must be notified and their response received in writing prior to flying this aircraft after incorporating a major change as defined by FAR section 21.93" Current guidance can be found in FAA Order 8130.2g. http://www.faa.gov/documentLibrary/media/Order/8130.2G.pdf If you have op lims after 1999, the aircraft owner now just has to make two entries in the logbook - one describing the major change, and after a minimum of a five hour test flight, one showing that the safety of the aircraft (FAR 91.319) and the critical airspeeds (Vx, Vy, Vso) have been reestablished. No need to contact the FSDO. Note that 8130.2g starts with: "After incorporating a major change as described in 14 CFR ? 21.93" 21.93 says, "A ??minor change?? is one that has no appreciable effect on the weight, balance, structural strength, reliability, operational characteristics, or other characteristics affecting the airworthiness of the product. All other changes are ??major changes?? (except as provided in paragraph (b) of this section)." Changing to a different type of engine should be easily shown to be a major change. -Dj -- Dj Merrill - N1JOV - EAA Chapter 87 Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/ Glastar Flyer N866RH - http://deej.net/glastar/
