What is the total number of PDI's on each engine?

The total number of Primary Deviation Indicators (PDI's) on each engine of the MH-60S is four. These PDI's are critical for monitoring various parameters that ensure the safe and efficient operation of the engine. Each PDI provides visual cues to the operator regarding performance metrics such as temperature, pressure, and RPM, allowing for real-time assessment of the engine’s health.

Having a set number of PDI's is essential for maintaining consistent standards across operations, as it allows crew members to quickly identify and troubleshoot any issues that arise during flight operations. Each engine is thus equipped with four distinct PDI's, which collectively aid in enhancing situational awareness and operational safety.