What is the consequence of not logging the required flights for passenger carry?

Not logging the required flights for passenger carry can lead to the inability to carry passengers for hire. This requirement stems from FAA regulations that mandate pilots maintain specific flight experience logs to ensure they are qualified and proficient to fly passengers safely. This logging serves as a record of a pilot's recent experience and training, which is crucial for demonstrating competency to transport passengers and meet regulatory safety standards.

Failure to properly log these flights can result in a situation where a pilot is technically unqualified to carry passengers, as the FAA could consider that the pilot does not meet the necessary currency and experience requirements. This directly impacts the pilot's ability to engage in commercial operations where passengers are being carried, thereby preventing lawful passenger transport.

The other options highlight various scenarios that may not directly relate to the primary consequence of flight logging requirements, hence do not capture the essential regulatory aspect that affects passenger carrying privileges.