To act as a pilot in command in the R-22, what must you obtain after a flight review?

To act as a pilot in command of an R-22, obtaining an endorsement from an authorized flight instructor after a flight review is essential. This endorsement serves as formal recognition that the instructor has evaluated your flying skills and knowledge and deemed you competent to operate the specific aircraft type. It signifies that you have demonstrated adequate proficiency and understanding of the operational requirements and limitations associated with the R-22, thus ensuring safety and compliance with aviation regulations.

The process of receiving this endorsement is integral to maintaining standards within the aviation community and upholding safety. It verifies that pilots are current and equipped with the necessary skills and knowledge specific to the aircraft they intend to fly. Without this instructor endorsement, a pilot cannot legally act as pilot in command of the R-22, regardless of previous experience or certifications.

The other choices listed, such as flight logs or maintenance records, play important roles in tracking flights and ensuring aircraft safety, but they do not serve the specific regulatory requirement of confirming a pilot's ability to operate a particular helicopter type after a flight review. A student pilot certificate is unrelated to the requirement for acting as pilot in command under the circumstances described.