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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 1500 to 2000 psi range. Most commercial airliners run at 3000 psi, some newer aircraft models may have system operating pressures as high as 4500 psi.

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