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← TechnologyWhich consequence arises when an oil pump's pressure relief valve sticks closed in aircraft piston engine?
A)Bearing failure from excessive oil pressure✓
B)Cylinder head cracking from insufficient cooling
C)Fuel injector blockage from contaminated oil
D)Propeller overspeed from reduced drag
💡 Explanation
When the oil pump's pressure relief valve sticks closed, excessive oil pressure builds because of blocked bypass, leading to component over-stressing and potential catastrophic failure. Therefore leading to damage to engine bearings specifically, instead of other issues related to cooling, fuel, or aerodynamics.
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