What term describes a person assigned to perform a duty in an aircraft during flight time?

The term that describes a person assigned to perform a duty in an aircraft during flight time is "crewmember." This term encompasses all individuals who are part of the flight team on an aircraft, which can include pilots, flight attendants, and any other personnel who play a role during the flight. Understanding this definition is crucial because it highlights the collaborative nature of the flight team, where each member performs specific responsibilities to ensure the safety and comfort of passengers.

While a flight engineer, pilot, and cabin supervisor are all specific roles within the broader category of crewmembers, they each refer to more specialized positions. The flight engineer focuses on monitoring and managing the aircraft's systems, the pilot is responsible for operating the aircraft, and the cabin supervisor oversees the cabin crew's operations and service delivery. Recognizing the broader term "crewmember" is essential for understanding the various functions and teamwork involved in flight operations.