Thanks very much, Mike!
From: Mike Borfitz via Mifnet <mifnet@lists.mifnet.com> Sent: Monday, August 25, 2025 10:45 PM To: mifnet@lists.mifnet.com Cc: Mike Borfitz <borf...@gmail.com> Subject: [Mifnet π° 73821] Re: query re Part 135 Hi Bob, I'm working on my phone so i can't get into details. I've attached some links to some information that might help. Bottom line, Amendment 23-64 effective late 2016, was a big big HUGE change in Part 23. The AOPA article below explains the amendment pretty well, before the final rule was published. The first paragraph does a good summary. Below that is an FAA Guide to 23-64, followed by an FAA-published acceptance of an ASTM Standard for showing compliance. THEN links to Amdt 23-64 and an older amendment - not sure which one but it doesn't matter. What DOES matter is the numbering system was completely changed, after half a century. A quick comparison makes it clear that the FAA allowed a completely different approach. Tha last 2 are a nice little FAA video that trues to explain the new amendment, and the Notice of Proposed Rulemaking (NPRM) that got the 23-64 ball rolling. This should be a good start for your friend if he can stay awake. AOPA Article: https://www.aopa.org/advocacy/advocacy-briefs/understanding-part-23-rewrite#:~:text=The%20FAA%20has%20rewritten%20the,aspects%20of%20an%20airplane's%20design FAA Guide to Part 23 Amendment 64 https://www.faa.gov/sites/faa.gov/files/Part_23_amdt_23-64_implementation_procedures_guide.pdf FAA declaration of ASTM F3264-23 as an acceptable means of compliance: https://www.federalregister.gov/documents/2022/03/11/2022-04845/accepted-means-of-compliance-airworthiness-standards-normal-category-airplanes "New" Amdt 64: https://www.ecfr.gov/current/title-14/chapter-I/subchapter-C/part-23?toc=1 Older amendment: https://acrobat.adobe.com/id/urn:aaid:sc:US:77aea014-78e6-4b21-a715-b24f149edcf3 A nice little FAA video introducing Amdt 64; https://youtu.be/Ft2Rw21e7SY?si=RS23jY9OQIuAWgYl The Amdt 23-64 NPRM: https://www.federalregister.gov/documents/2016/03/14/2016-05493/revision-of-airworthiness-standards-for-normal-utility-acrobatic-and-commuter-category-airplanes Mike Borfitz, DER Cell 206-714-8797 e-Mail: m...@borfitz.com <mailto:m...@borfitz.com> Kilroy Aviation LLC Website: <http://www.faaoda.com/> WWW.FAAODA.COM Kilroy is available for aviation regulatory and safety issues - Type & Production Certification, Continued Operational Safety - International validation & safety matters - Program & system management - FAA STC ODA On Mon, Aug 25, 2025, 1:51β―PM bob.poole--- via Mifnet <mifnet@lists.mifnet.com <mailto:mifnet@lists.mifnet.com> > wrote: Dear Mifnet, I received a question from a Part 135 charter pilot who is two semesters into a Masterβs degree in commercial aviation. He asked if I am aware of useful writings about Part 23 aircraft certification changes, any reductions in regulation, or suggestions for reform. Since he is not a member of this organization, I told him I would post his question and send him any replies that appear to be on-point. He is seeking this information for a class project. Thanks in advance, Bob Poole -------------------------------------------------------------------------- Revised: 20250507 You are receiving The Mifnet because you requested to join this list. The Mifnet is largely a labor of love, however the infrastructure isn't exactly cost-free. 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-------------------------------------------------------------------------- Revised: 20250507 You are receiving The Mifnet because you requested to join this list. The Mifnet is largely a labor of love, however the infrastructure isn't exactly cost-free. If you'd care to make a small contribution to the effort, please know that it would be greatly appreciated: https://wardell.us/url/mifbit All posts sent to the list should abide by these policies: 1) List members acknowledge that participation in Mifnet is a privilege--not a right. 2) Posts are always off the record, absent specific permission from the author. 3) The tone of discussions is collegial. 4) Posts are expected to be in reasonably good taste. 5) We discuss ideas and not personalities, and we don't speak ill of other Mifnet members. * The Mifnet WEB SITE is: https://www.mifnet.com/ * To UNSUBSCRIBE from this list at any time please visit: https://lists.mifnet.com/ OR: SEND THIS MESSAGE via email: mifnet-requ...@lists.mifnet.com?subject=leave * Send Mifnet mailing list POSTS/SUBMISSIONS to: mifnet@lists.mifnet.com * You may reach the person managing The Mifnet at: mifnet-ow...@lists.mifnet.com * Please consider the DIGEST version of The Mifnet, which consolidates all list traffic into 1-3 messages daily. See instructions at: https://lists.mifnet.com/ * Manage your personal Mifnet SUBSCRIPTION at: https://lists.mifnet.com/ * For a list of all available Mifnet commands, SEND THIS MESSAGE via email: mifnet-requ...@lists.mifnet.com?subject=help * View The Mifnet LIST POLICIES and PRIVACY POLICY at: https://mifnet.com/index.php/policies * View instructions for Mifnet DELIVERY PROBLEMS at: https://mifnet.com/index.php/delivery-problems * View The Mifnet LIST ARCHIVE at: https://lists.mifnet.com/hyperkitty/list/mifnet@lists.mifnet.com/
