How many PDIs are located on each hydraulic pump in the HSC-3?

In the context of hydraulic pumps used in the HSC-3, each hydraulic pump is equipped with two Primary Data Inputs (PDIs). These PDIs serve crucial functions by providing the necessary data for monitoring and managing the hydraulic system's performance. The presence of two PDIs allows for redundancy, enhancing the reliability and safety of the hydraulic system. This design is essential, as it helps to ensure that if one data input fails or becomes inaccurate, the other can still provide accurate performance metrics.

While other options may suggest different numbers of PDIs, the standard configuration across the hydraulic pumps for the HSC-3 is specifically two, making it vital for personnel to be familiar with this aspect. Understanding the role and quantity of PDIs contributes to effective maintenance and troubleshooting of the hydraulic system, which is essential for the safe operation of the aircraft.