How does the hydraulic landing gear system operate in the PC-12?

The hydraulic landing gear system in the PC-12 operates via a hydraulic power pack, which provides the necessary pressure to extend and retract the landing gear. This system utilizes hydraulic fluid that is pumped through lines to actuators that control the movement of the landing gear. The reliance on hydraulic power allows for smoother and more reliable gear operation, which is essential for the safety and efficiency of landing and takeoff sequences.

In the context of the other choices, electric motors are typically used in some aircraft for various systems but are not the primary mechanism for the PC-12's landing gear operation. Battery backup could be relevant for certain systems but is not the main operation mechanism for the landing gear in this aircraft. Manual operation only would not be practical or efficient for a modern aircraft; the PC-12 is designed with hydraulic systems to ensure rapid and effective gear deployment and retraction under standard operating conditions.