What is the key characteristic of a "thru passenger"?

A "thru passenger" is someone who remains onboard the aircraft during an intermediate stop on their journey to their final destination. This characteristic is essential for flight crew to understand as it affects how service is provided during layovers. For instance, the flight attendants would need to ensure that these passengers are accounted for and comfortable, even when the aircraft is briefly on the ground.

Other choices may include scenarios that do not specifically describe a thru passenger. For example, the requirement for special meals and large group travel pertain to service needs but do not define the thru passenger's travel behavior. Changing aircraft at each stop would also indicate that the passenger is not a thru passenger, as they would typically disembark to board a different flight. Understanding the definition helps in carrying out duties effectively and enhancing passenger experience.