What is a flight crew member?

A flight crew member is defined as a qualified person assigned for duty on the aircraft. This includes individuals who are responsible for operating the aircraft and ensuring safety during the flight. Flight crew members typically include pilots, co-pilots, and other essential personnel such as flight engineers, who have received the necessary training and certification to perform their roles effectively.

The option addressing a passenger in a seat on the aircraft is not appropriate because passengers do not hold any operational responsibilities or duties related to the conduct of the flight. An instructor providing training does not fit the definition either, as they may not be assigned to the actual flight crew for a particular flight and typically operate in a different context. Finally, a pilot not flying the aircraft, while part of the flight crew, does not encompass all aspects of the definition, as the focus should be on the overall qualified personnel assigned to the operation of the aircraft. Thus, the correct definition emphasizes the qualifications and duties of those directly involved in the aircraft's operation.