What is the purpose of a flight logbook?

The purpose of a flight logbook is primarily to record flight experiences and hours logged. It serves as an official record of a pilot's flight time, which is essential for meeting various requirements, including those necessary for obtaining and maintaining certifications and licenses. The logbook provides a comprehensive account of all flights, including the type of aircraft flown, conditions, and the duration of each flight, which helps demonstrate the pilot's experience level to regulatory authorities.

While other choices may sound relevant in the aviation context, they do not encompass the primary function of a flight logbook. Calculating weight and balance, tracking maintenance schedules, and managing fuel usage are important aspects of flight operations but are typically documented in different formats or logs distinct from a pilot's personal flight logbook. Thus, option B accurately reflects the core utility of the logbook.