During the overspeed governor check, what percentage of torque should be verified to reach 100 +/-2% Np?

In the context of the overspeed governor check for the T-6A, verifying torque is essential for ensuring that the engine operates within its designed limits and for confirming that the overspeed governor is functioning properly. The aim is to achieve a specific Np (propeller speed) at a given torque percentage.

When aiming to reach 100 +/-2% Np, the correct torque percentage to verify is indeed set around 30 +/-5%. This percentage is critical because it represents a balance where the propeller is able to generate enough thrust without risking an overspeed condition. This ensures that the engine can operate safely under various load conditions and confirms that the control systems managing engine performance are calibrated correctly.

In contrast, other torque settings do not align with the operational requirements necessary to achieve this level of Np reliably. Understanding the torque-to-Np relationship is crucial for maintaining the performance and safety of the aircraft during flight operations.