Originally Posted by
foxmoth
Very much depends on experience (both instructor and Pilot) and types going from and to. Checking someone on say an RV8 when they have been flying a Cub might just need a bit more than an hour!
The OP specifically stated that he was looking to get checked out in a C 150 so I stand by my contention that one hour of flight time should be sufficient to clear him to go on his own.
If more than an hour is spent on this then something is wrong. Either the instructor is milking the process or there is some fundamental skills lacking on the part of the person being checked out. I have personally seen a case where 10 hours of extra dual was required before we would rent the flying school C 172 to an individual. This person had owned and flown their own Pa 28 for almost 20 years.