To act as pilot-in-command of an airplane with more than 200 horsepower, which requirement must be fulfilled?

To act as pilot-in-command of an airplane with more than 200 horsepower, the requirement to receive and log ground and flight training from an authorized instructor in such an airplane is essential. This process ensures that pilots gain the necessary skills, knowledge, and competencies to operate more complex aircraft safely. The training provides direct experience with the aircraft's handling characteristics, performance, and systems that are specific to planes exceeding that power threshold.

The emphasis on receiving both ground and flight training allows the pilot to understand the theoretical aspects of operating the aircraft as well as practical application through hands-on experience. This dual approach promotes safety and ensures that pilots are well-prepared to manage the aircraft's features and potential challenges associated with higher horsepower.

The other choices do not meet the specific regulatory requirements needed for the operation of such aircraft. Obtaining an endorsement from a qualified pilot or completing a written test may be important steps in a pilot's learning process, but they do not replace the need for comprehensive training. Similarly, logging a specific number of flight hours does not necessarily guarantee the required proficiency without targeted instruction and evaluation by a qualified instructor.