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← TechnologyWhich outcome results when an aircraft's hydraulic actuator servo valve jams?
A)Uncommanded surface deflection occurs rapidly✓
B)Hydraulic system pressure reduces slowly
C)Actuator seal leakage increases gradually
D)Control surface locks into place neutrally
💡 Explanation
Rapid, uncommanded deflection occurs because the blocked valve causes asymmetrical pressure acting through the differential area mechanism on the actuator piston; therefore, the surface rapidly moves rather than holding position, because pressure builds on one side.
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