it's required to send in the Airworthiness Certificate to get a replacement or not. For my plane, we did not send in to get a new Airworthiness Certificate. I have all the changes made, the data plate changed, the log book entries made and I can wave a copy of A-787 in any lawyers face and A-787 does NOT say you need to get a replacement Airworthiness Certificate (nor does it say anything on that subject). We have NOT sent a formal request to the FAA certification branch asking for an official ruling since that might put several hundred Coupers in an awkward position.
An FAA certification branch official did tell me that there's no such thing as converting a plane to a later model unless the type certificate explicitly says it can be done, such as in A-787. Therefore, there's no such thing as converting a plane to BE a 415-E, for example. You could make the changes (if you can get an FAA wienie to sign-off on all the changes) and make a log book entry that you've converted it to be LIKE a 415-E. Hope this is useful enough to you. It's the best info I've gleaned from 23 years of paying close attention to this subject. Ed Burkhead -----Original Message----- From: Richard Wilkens [mailto:[EMAIL PROTECTED] Sent: Tuesday, May 21, 2002 11:48 AM To: [email protected] Subject: [COUPERS-FLYIN] Approved Type Certificate ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- I have a question from a friend in the UK that I couldn't answer. I think that the ATC should be changed from A718 to A787 when a Coupe is converted from a "C" to a "D", because that is what the "D" is flying under. I am not sure if the ATC is always changed when the conversion is done. Wouldn't it require a new Certificate of Airworthiness and not just a AP's sign-off to change the ATC? Question from the UK: The Type Certificate Number for the Ercoupe 415C is A718; that for the 415D is A787. When a 415C is converted to a 415D, does the Type Certificate Number stay as that for the original aircraft, or does it get a new one pertaining to the 415D? 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