What must a recreational pilot receive before acting as PIC for a cross-country flight beyond 50 NM?

A recreational pilot must receive a logbook endorsement from an instructor before acting as pilot-in-command (PIC) for a cross-country flight that exceeds 50 nautical miles. This endorsement serves as evidence that the pilot has been trained and deemed competent by a qualified instructor to safely conduct such flights. It ensures that the pilot has the necessary skills and knowledge regarding navigation, aircraft performance, and other essential factors that play a crucial role in safely flying farther distances. The endorsement process reinforces the importance of receiving proper instruction and experience in specific flight operations, especially as complexity increases with longer cross-country routes.

The other options are not applicable in this context; for example, FAA approval is not required for individual recreational pilots for specific flights, nor is a special waiver necessary. Additionally, while medical clearance is essential for all pilots, it does not pertain specifically to the requirement for cross-country flying endorsements. Thus, the logbook endorsement is the correct and necessary requirement for a recreational pilot in this scenario.