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What is the common operating pressure of the hydraulic system on most large transport aeroplanes?
  • A
    4000 psi
  • B
    3000 psi
  • C
    3500 psi
  • D
    1500 psi
Pressures on aircraft hydraulic systems run higher than on many industrial applications, which generally remain in the 1 500 to 2 000 psi range. Most commercial airliners run at 3 000 psi, some newer aircraft models may have system operating pressures as high as 4 500 psi.

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