Certified Flight Instructor - Flight Instructor Airplane Practice Exam

Which of the following defines the term "crewmember"?

1. Only a pilot, flight engineer, or flight navigator.

2. A person assigned to perform duty in an aircraft during flight time.

3. Any person serving on the crew of an aircraft.

4. Someone involved in ground operations before flight.

The correct answer is: A person assigned to perform duty in an aircraft during flight time.

The correct definition of "crewmember" is a person assigned to perform duty in an aircraft during flight time. This definition encompasses a broad range of individuals who have specific responsibilities while the aircraft is in operation, which may include pilots, flight attendants, and other specialized personnel. Evaluating the other choices highlights their limitations. The first choice focuses only on traditional flight crew roles like pilots and navigators, excluding other vital positions that may contribute to aircraft operations. The third choice, while closer, is too vague as it does not specify the context of service being during flight time, which is essential for defining a crewmember. The fourth choice pertains to ground operations, which is outside the scope of what constitutes a crewmember during flight. By clearly stating that a crewmember is someone assigned duties during flight, the correct answer accurately captures the full intent behind the term as recognized in aviation regulations and industry practices.