Final answer:
To act as a crew member of a civil aircraft, a person must have a valid pilot's license, proper training and qualifications, authorization from the aircraft owner, and a valid medical certificate.
Step-by-step explanation:
In order for a person to act as a crew member of a civil aircraft, they must have a valid pilot's license, proper training and qualifications, authorization from the aircraft owner, and a valid medical certificate.
Having a valid pilot's license ensures that the person has completed the necessary training and passed the required exams to demonstrate their knowledge and skills in piloting an aircraft.
Proper training and qualifications are essential to ensure that the crew member is familiar with the aircraft's systems, operations, and emergency procedures.
Authorization from the aircraft owner is necessary as they hold the responsibility for allowing individuals to act as crew members on their aircraft.
A valid medical certificate is required to ensure that the crew member is physically and mentally fit to perform their duties safely.