What is housed in the aft fuselage of the PC-12?

The correct answer, indicating that the Vapor Cycle Cooling System (VCCS) is housed in the aft fuselage of the PC-12, highlights its role in maintaining cabin comfort by regulating temperature during flight. The VCCS is crucial for ensuring that passengers and crew experience a comfortable environment, particularly during changes in altitude and external temperature variations.

Positioning the VCCS in the aft fuselage optimizes space and weight distribution within the aircraft, which is important for performance and handling. While the other options listed may include elements associated with the aircraft, such as fuel tanks being located in other parts or navigation equipment being placed in the cockpit or instrument panel, the specific function and placement of the VCCS is what makes this option the correct choice in relation to the question.

Understanding where the critical systems of an aircraft are located helps in comprehending overall aircraft design and functionality, particularly in the context of flight safety and efficiency.