three-eight-hotel wrote:
Guy has an airplane, commercial certificate but no instructor rating
and takes students up for acrobatic lessons, mountain checkouts and
charges for it. FAA legal?


How could anyone give an endorsement or allow someone log dual time
received without and instructor rating?

It will all get very clear after the "student" has an accident and the
NTSB looks into ratings and the qualifications of the person that
granted them.