Originally Posted by
ST Dog
Another thing to note is different certification.
747MAX was FAA certification. The military has their own certification. 3 actually Army, Air Force, and Navy each have different certification for their respective aircraft. Just because the Navy certified something doesn't mean it's good for the Air Force.
Actually, the KC-46
was FAA certified - two FAA certifications were done - the 767-2C (which was the basis for the KC-46), and the KC-46 modification was certified as well. Some aspects of the KC-46 didn't get direct Part 25 certification (there are no regulations regarding air-to-air refueling), but the airworthiness (including MCAS) of the KC-46 was FAA certified.