All planes are required to have the original POH onboard. However those don't really tell you how to fly the plane it's more focused on things like Vspeeds minimum flap extension speeds etc..
My later year A36, I believe needs the original AFM/POH. (In any case, I do carry it.)
If you didn’t know how to fly, you couldn’t read enough of the book to figure it out before the aircraft departed controlled flight (if not on at least a wing-leveler autopilot).
As the owner/operator of an early 1979 build aircraft that does not have an AFM, I’ve had this discussion with maintenance/airworthiness inspectors so frequently that I keep a printout of 14 cfr 21.5 in my POH.
https://www.ecfr.gov/current/title-14/chapter-I/subchapter-C...