mdwflyer wrote:The last amendment to the type certificate was 1979. When was note 5 added? Interesting forensic semantics, was it there in 1956? What is Date of manufacture as applicable? Does the airplane have to have engines installed to be manufactured?
Not to try to throw a "monkey wrench" into your "works" but that may not be correct either. The "current" revision of the TC is not actually current because it is no longer "owned" by Gulfstream American Corp. in Savannah, GA - and hasn't been for 35+ years. It has been owned since that time by Frakes Aviation of Cleburne, TX, just like the ones for the Grumman G-21A Goose and G-73 Mallard, although Frakes does absolutely nothing to support any of those types besides the Mallard. I know it for a fact, but the only "evidence" of it is the fact that "control" or oversight of TC 654 and A-734 were transferred from the NY and ATL FAA Aircraft Certification Offices (ACO) respectively to the DFW (TX) ACO years ago, but nobody ever bothered to update the actual TC's to show Frakes' ownership - and that is on Frakes. I think that they did so intentionally to stay "under the radar."
I have to guess that Note 5 was added whenever the very first SCAN Type 30 was in the process of being certified in the US, whenever that was. According to Bill, it could have been as early as 1955, but the only way to tell would be to find all of the earlier versions/revisions of TC A-734 for comparison. (I have most of the earlier versions/revisions of McKinnon's TC 4A24 pertaining to his G-21 series for example, but have not yet gotten that deep into the Widgeon "rabbit hole.")
And finally, when it is a matter of formal certification under, as in this case, 14 CFR Part 21, then it is not just a matter of "semantics"; you can't "manufacture" an aircraft if you are not certified or approved as a "manufacturer" under Part 21 - and if you "build" an airplane without that kind of certification, then you are an "amateur builder" and the aircraft in question is not eligible for anything more than certification under the Experimental category and hence would not be allowed to be used for commercial operations.