What document must be in a recreational pilot's logbook?

A recreational pilot's logbook must include a current logbook endorsement from an instructor to demonstrate that the pilot is qualified to fly the specific aircraft they are logged as having flown, as well as to confirm that they have received the necessary training in the required areas of operation. This endorsement is a crucial component of ensuring that pilots operate within their privileges and have up-to-date training for the maneuvers and types of flights they are undertaking.

While flight manuals and certificates of accomplishment may be useful, they are not requirements for a logbook. Similarly, a confirmation letter from the FAA does not pertain to the individual pilot's training records and endorsements necessary for logbook entry. Therefore, the logbook endorsement from an instructor is essential for validating the pilot's training and ensuring compliance with regulations regarding recreational flying.