What is the maximum allowable engine oil pressure?

• A. 90 psi
• B. 100 psi
• C. 110 psi
• D. 120 psi

Answer: (C)

The maximum allowable engine oil pressure for the TH-73A is 110 psi. Maintaining proper oil pressure is crucial for the lubrication of engine components and overall engine performance. Adequate oil pressure ensures that oil circulates effectively throughout the engine, reducing friction and wear, and helping to cool engine parts.

If the oil pressure exceeds the maximum limit of 110 psi, it could indicate a possible malfunction, such as a blockage or a defect in the oil pump, which could lead to severe engine damage. Therefore, 110 psi is established as a safe upper limit to prevent potential overpressure situations while ensuring optimal engine function. Understanding and adhering to this specification is essential for safe operation and longevity of the aircraft’s engine system.