What transmission oil pressure range is considered cautionary?

• A. 50 to 60 psi
• B. 55 to 70 psi
• C. 60 to 75 psi
• D. 65 to 80 psi

Answer: (B)

The cautionary range for transmission oil pressure is established to ensure that the system operates safely and efficiently, thereby preventing potential damage or failures. In the context of the TH-73A, the correct range of 55 to 70 psi serves as a warning that the oil pressure may not be ideal for performance or may indicate an underlying issue that requires monitoring.

This range is important for pilots to be aware of because if the transmission oil pressure falls below or exceeds this cautionary range, it can lead to increased wear on the transmission components, overheating, or other mechanical issues that could compromise safety and operational efficiency. By keeping transmission oil pressure within this specified range, the operational integrity of the aircraft is maintained, ensuring safe flight conditions and performance reliability.

Understanding the cautionary ranges and their implications allows operators to make informed decisions during flight and on the ground, contributing to overall aircraft readiness and safety.