What does CPCS stand for in aviation terminology?

CPCS stands for Cabin Pressure Control System in aviation terminology. This system is crucial for maintaining the proper cabin pressure in an aircraft, particularly during ascent and descent. As the aircraft climbs or descends, the atmosphere outside changes, and the cabin pressure needs to be regulated to ensure passenger comfort and safety.

The Cabin Pressure Control System continuously monitors the cabin altitude and adjusts the pressure accordingly to prevent significant pressure changes that could negatively affect passengers and crew. This system is particularly important in pressurized aircraft like the Pilatus PC-12 NG, where maintaining a comfortable and safe environment at altitude is essential for long flights.

The other terms mentioned, though they may sound relevant, do not fit the standard terminology used within aviation concerning cabin pressure management.