Which of the following is NOT a requirement to act as pilot-in-command (PIC)?

To act as pilot-in-command (PIC), one of the primary requirements is having a valid pilot certificate, a current medical certificate, and sufficient flight experience for the type of flight being conducted. While these are essential for safety and compliance with regulations, possessing a personal flight logbook is not a legal requirement to serve as a PIC.

A personal flight logbook is a useful tool for tracking flight hours, experiences, and meeting currency requirements, but it is not mandated by the FAA for a pilot to operate an aircraft as a PIC. The logbook serves more as a personal record-keeping practice that helps pilots maintain their qualifications and monitor their progress over time rather than a prerequisite for legal flight operations. Therefore, not requiring a personal flight logbook distinguishes it from the other criteria, which are crucial for the role of PIC.