Here's what FAR part 43, Appendix A, has to say about major engine alterations:
(2) Powerplant major alterations. The following alterations of a powerplant when not listed in the engine specifications issued by the FAA, are powerplant major alterations. (i) Conversion of an aircraft engine from one approved model to another, involving any changes in compression ratio, propeller reduction gear, impeller gear ratios or the substitution of major engine parts which requires extensive rework and testing of the engine. (ii) Changes to the engine by replacing aircraft engine structural parts with parts not supplied by the original manufacturer or parts not specifically approved by the Administrator. (iii) Installation of an accessory which is not approved for the engine. (iv) Removal of accessories that are listed as required equipment on the aircraft or engine specification. (v) Installation of structural parts other than the type of parts approved for the installation. (vi) Conversions of any sort for the purpose of using fuel of a rating or grade other than that listed in the engine specifications. ----- Original Message ----- From: "Larry&Sallie Flesner" <[email protected]> To: "KRnet" <[email protected]> Sent: Thursday, March 01, 2007 7:48 PM Subject: Re: KR> "fly-off" period after engine change > > > > >"After incorporating a major change as described in FAR 21.93, the > >aircraft owner is required to re-establish compliance with FAR > >91.319(b) and notify the geographically responsible FSDO of the > >location of the proposed test area. The aircraft owner must obtain > >concurrence from the FSDO as to the suitability of the proposed test area. > >(SNIP) > >He made it clear that unless I was changing the engine make or > >model, I was not making a "major change", and that I would not have > >to file any paperwork, just make the two logbook endorsements mentioned above. > >Mark Langford > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > > So, I'm wondering, if you didn't change engine make and model, and > according to the FSDO > person didn't make a major change, why does he say it has to go back > through a test period? > Seems to me a simple log entry as to the engine change would suffice > and go fly. I suspect that there are no two people in the FSDO/s or > DAR's that will interpret the reg's the same. > Too much gobbledy gook and wiggle room in that ton of paper they call > the FAR's. > The only time it will matter anyway is if you have an accident and > then they already have you > by the "gonads" anyway. :-) > > Larry Flesner > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to [email protected] > Post photos, introductions, and For Sale items to http://www.kr2forum.com/phpBB2/index.php > please see other KRnet info at http://www.krnet.org/info.html >
