How is the Hydraulic Pressure Bypass Valve opened?

The hydraulic pressure bypass valve is designed to open when the hydraulic system pressure exceeds a predetermined limit—in this case, 1850 PSI. This safety feature helps protect the hydraulic system from excessive pressure that could lead to damage or failure. When the crew manually opens the valve under these conditions, it allows the excess pressure to be relieved safely, preventing potential hazards such as leaks or system damage.

In typical operations, the valve isn't opened automatically or by environmental controls, as this could compromise the hydraulic system's integrity and functionality. Regular maintenance checks do include inspections of such components, but the actual opening of the bypass valve due to high pressure is a specific response that the crew must execute as a safety protocol. This manual intervention emphasizes the importance of crew awareness and training in maintaining hydraulic system safety and effectively managing pressure situations.