What situation might occur if the hydraulic pressure drops below 750 PSI?

When hydraulic pressure drops below 750 PSI, it indicates a significant loss of hydraulic system performance, leading potentially to a total hydraulic failure. This situation is critical because many aircraft control systems, including flight controls and landing gear, depend on adequate hydraulic pressure to function properly. With pressure at such a low level, the aircraft may indeed experience a complete loss of hydraulic systems, meaning essential controls might become inoperable.

Maintaining adequate hydraulic pressure is crucial for the safe operation of the aircraft, so a pressure drop below 750 PSI serves as a warning that normal functionality cannot be assured, and pilots may not be able to perform necessary maneuvers or operations safely. Recognizing this threshold is key to ensuring safe operation and understanding the implications of hydraulic pressure fluctuations.