How many hydraulic systems are there and what PSI are they rated at?

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Multiple Choice

How many hydraulic systems are there and what PSI are they rated at?

Explanation:
Three hydraulic systems are used, each rated at 3,000 psi. This three-system layout provides redundancy so that vital flight controls, landing gear, and brakes can continue to function even if one system isn’t available. The 3,000 psi rating is the standard pressure for these circuits, delivering the necessary force for the actuators on a modern jet. Other options don’t fit the aircraft’s design, which uses three independent circuits and a 3,000 psi specification.

Three hydraulic systems are used, each rated at 3,000 psi. This three-system layout provides redundancy so that vital flight controls, landing gear, and brakes can continue to function even if one system isn’t available. The 3,000 psi rating is the standard pressure for these circuits, delivering the necessary force for the actuators on a modern jet. Other options don’t fit the aircraft’s design, which uses three independent circuits and a 3,000 psi specification.

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