What does the fuselage of an aircraft typically contain?

The fuselage of an aircraft is often described as the main body of the aircraft, and it serves several vital functions. One of its primary roles is to house and support the flight crew, passengers, and cargo. It also contains vital systems and equipment necessary for the operation of the aircraft. This includes avionics systems, electrical equipment, flight control systems, and environmental control systems.

While other components such as the wings, landing gear, and engines are essential to the aircraft's structure and functionality, they are typically mounted to the fuselage rather than contained within it. The fuel is usually stored in tanks that can be integrated into the wings or in the fuselage itself, but it's the equipment and systems that are crucial for flight operation and aircraft management that predominantly fill the fuselage space, making the assertion about housing most of the equipment accurate.