To ensure the safety of aircraft and their occupants

To maximize the efficiency of air travel

To minimize the cost of air travel

To increase the speed of air travel

Airframe safety, propulsion safety, and flight control safety

Structural safety, operational safety, and human factors safety

Design safety, manufacturing safety, and maintenance safety

Flight safety, ground safety, and security safety

To protect the aircraft from damage in the event of an accident

To ensure the aircraft can withstand the forces of flight

To make the aircraft more aerodynamic

To reduce the weight of the aircraft

Pre-flight inspections, flight planning, and crew training

Aircraft maintenance, air traffic control, and weather forecasting

Passenger screening, baggage handling, and security checks

All of the above

To study the interaction between humans and aircraft systems

To design aircraft systems that are easy to use and understand

To train pilots and other crew members on how to operate aircraft systems safely

All of the above

To control the aircraft's attitude and direction of flight

To provide thrust for the aircraft

To generate lift for the aircraft

To slow the aircraft down

To provide thrust for the aircraft

To generate lift for the aircraft

To control the aircraft's attitude and direction of flight

To slow the aircraft down

The airframe is the structure of the aircraft, while the propulsion system provides thrust

The airframe is the part of the aircraft that generates lift, while the propulsion system provides thrust

The airframe is the part of the aircraft that controls the aircraft's attitude and direction of flight, while the propulsion system provides thrust

The airframe is the part of the aircraft that slows the aircraft down, while the propulsion system provides thrust

To support the aircraft on the ground

To provide thrust for the aircraft

To generate lift for the aircraft

To slow the aircraft down

To control the aircraft's attitude and direction of flight

To provide thrust for the aircraft

To generate lift for the aircraft

To slow the aircraft down

To help the pilot navigate the aircraft from one location to another

To provide thrust for the aircraft

To generate lift for the aircraft

To slow the aircraft down

To manage and control the flow of air traffic

To provide thrust for aircraft

To generate lift for aircraft

To slow aircraft down

The Federal Aviation Regulations (FARs) in the United States

The European Aviation Safety Agency (EASA) regulations in Europe

The International Civil Aviation Organization (ICAO) standards and recommended practices

All of the above

To transmit a distress signal in the event of an emergency

To provide thrust for the aircraft

To generate lift for the aircraft

To slow the aircraft down

To ensure the aircraft is safe to fly

To improve the performance of the aircraft

To reduce the cost of operating the aircraft

All of the above