What does PCA stand for in aviation?

Preconditioned Air (PCA) refers to air that is treated to ensure a comfortable temperature and humidity level before being introduced into the aircraft’s cabin. This system is commonly used at airports to enhance passenger comfort while an aircraft is parked at the gate, and it helps reduce the need for the aircraft's own air conditioning system, providing energy efficiency. Implementing PCA can also lead to improved turnaround times by preparing the cabin environment before passengers board, making it a vital component in airport ground services and ramp operations. As such, understanding PCA is crucial for ramp agents as it directly impacts passenger comfort and operational efficiency.