According to FAA regulations, who must be onboard during customer boarding?

The correct response highlights the importance of having the minimum crew present during customer boarding, which is a key safety regulation established by the Federal Aviation Administration (FAA). The minimum crew typically includes the flight crew required to operate the aircraft safely, complying with FAA rules that mandate sufficient personnel to manage boarding procedures and ensure passenger safety.

This presence is vital for several reasons, including the ability to assist passengers, manage emergency situations, and conduct safety demonstrations effectively. Meeting these requirements not only enhances overall safety but also streamlines the boarding process, helping to ensure that passengers can board in an orderly and timely manner.

Other options, while focused on different roles, do not fulfill the FAA's specific mandates regarding the minimum number of crew members necessary during this critical phase of flight operations. Thus, recognizing the role of the minimum crew is essential for understanding flight safety regulations.