Lead and others, To simply answer a question on what FAR an aircraft is certified under you have to just look at the factory (or some copy of) pilot handbook or type data certificate sheet. Somewhere in the front (or limitations section) it will say what FAR or CAR (old regs) the aircraft is certified under:
CAR A or B
Part 23
Part 23 with SFAR 41 (10 to 19 pax aircraft)
or Part 25 Transport catagory.
(there could be others I do not know about. Part 21 is in there somewhere.)
Some of the older Lears and Citations were part 23 then part 25 depending on year on the type data certificate.
As for Vr in a part 23 aircraft, I have not run into one yet. Some manuals will tell you to lift the nose at xx airspeed but I do not recall a published rotate speed on part 23 or SFAR 41 aircraft. But I have not flown them all.
JAFI
CAR A or B
Part 23
Part 23 with SFAR 41 (10 to 19 pax aircraft)
or Part 25 Transport catagory.
(there could be others I do not know about. Part 21 is in there somewhere.)
Some of the older Lears and Citations were part 23 then part 25 depending on year on the type data certificate.
As for Vr in a part 23 aircraft, I have not run into one yet. Some manuals will tell you to lift the nose at xx airspeed but I do not recall a published rotate speed on part 23 or SFAR 41 aircraft. But I have not flown them all.
JAFI