Which area of the PC-12 is pressurized?

The area of the PC-12 that is pressurized is indeed from the cockpit to the aft pressure bulkhead. This includes the entire cabin where passengers and cargo are located, which helps maintain a comfortable environment during flight at high altitudes. Pressurization is crucial for ensuring that individuals onboard do not experience discomfort or hypoxia due to the lower air pressure found at higher altitudes.

In contrast, areas like the engine compartment, cabin floor, and tail section are not designed to be pressurized because they do not require the same environment as the area where occupants spend their time. The engine compartment, for instance, needs to function in conditions compatible with engine operation, while the tail section typically houses non-pressurized components that do not require a controlled atmosphere. Understanding the pressurized zones helps ensure safety and comfort during operation, particularly under Part 135 regulations, which govern commercial flight operations.