Which procedure includes the removal of GPU and PCA?

The procedure that includes the removal of Ground Power Unit (GPU) and Pre-Conditioned Air (PCA) is the Aircraft Departure Check. During this vital step, ramp agents ensure that the aircraft is properly prepared for departure. Part of this preparation involves disconnecting and removing equipment like the GPU and PCA that were used to power and condition the aircraft while it was on the ground.

Removing the GPU is essential as it prevents any electrical interference during taxi and takeoff, while PCA ensures that the cabin is at a comfortable temperature for passengers prior to departure. This process is crucial for the safety and efficiency of the aircraft's operations. Involving equipment removal signifies that the aircraft is ready to take on its journey, aligning with the standard operating procedures in the ramp workflow.