Does the ACS in the Pilatus PC-12 NG ever draw from both air ports simultaneously?

The Air Conditioning System (ACS) in the Pilatus PC-12 NG does not draw from both air ports simultaneously. This design ensures that the system operates efficiently and effectively by drawing air from one source at a time. This method helps maintain optimal performance of the air conditioning system while preventing possible complications that may arise from using multiple air sources concurrently.

In the context of aircraft operations, managing airflow and pressure is crucial for maintaining comfort and safety in the cabin. By isolating air draw to a single port, the system can more readily control the temperature and circulation of the air, which contributes to passenger comfort and system reliability.

Other answers may suggest scenarios where dual air source usage would be appropriate, but the operational design of the ACS intentionally avoids this to maintain system integrity and performance.