Does fresh air enter the cabin of the Pilatus PC-12 NG?

The correct understanding regarding the air circulation in the Pilatus PC-12 NG is that fresh air does not enter the cabin in the same way that one might expect from other aircraft. Instead, the cabin is primarily pressurized and recirculated air is conditioned to maintain a comfortable environment.

In the Pilatus PC-12 NG, the cabin uses a combination of air from the engine's bleed air system and recirculation processes, rather than a direct intake of fresh ambient air from outside under normal operating conditions. This design helps maintain a steady interior atmosphere, particularly during various phases of flight such as takeoff, cruising, and descent.

Choosing this option reflects an understanding of how the PC-12 NG manages cabin air quality and cabin pressurization, which is essential for ensuring pilot and passenger comfort during flight.