901.19(1) No person shall act as a crew member of a remotely piloted aircraft system if the person
(a) is suffering or is likely to suffer from fatigue; or
(b) is otherwise unfit to perform properly the person’s duties.
(2) No person shall act as a crew member of a remotely piloted aircraft system
(a) within 12 hours after consuming an alcoholic beverage;
(b) while under the influence of alcohol; or
(c) while using any drug that impairs the person’s faculties to the extent that aviation safety or the safety of any person is endangered or likely to be endangered.