"Jim Macklin" wrote in message
news:Jk_2g.7756$ZW3.7214@dukeread04...
[...]
(d) Aircraft category, class, and type ratings: Limitations
on operating an aircraft as the pilot in command. To serve
as the pilot in command of an aircraft, a person must-
[...] or

(3) Have received training required by this part that is
appropriate to the aircraft category, class, and type rating
(if a class or type rating is required) for the aircraft to
be flown, and have received the required endorsements from
an instructor who is authorized to provide the required
endorsements for solo flight in that aircraft.

Thank you. It seemed like such a regulation must have existed, but I
couldn't find it (and to be fair, you weren't providing it earlier).

That was exactly the information I needed to be properly informed.