What does Autothrottle Guard mode prevent?

The Autothrottle Guard mode is designed to enhance the safety and reliability of engine operations during flight by managing critical conditions that could lead to engine damage or performance issues. The correct choice, which includes overtemp, overtorque, and overspeed, accurately identifies the specific risks that Autothrottle Guard addresses.

Overtemperature occurs when the engine operates at a temperature that exceeds safe limits, which could harm the engine or reduce its lifespan. Overspeed refers to the engine rotating at a speed higher than its designed maximum, which can also lead to mechanical failure or performance degradation. Overtorque is related to the engine's torque levels, where exceeding the maximum torque can result in damaging the engine components or drivetrain.

By preventing these conditions, the Autothrottle Guard mode helps maintain safe engine performance and extends operational lifespans. This response is critical for pilots and engineers as they endeavor to maximize engine efficiency while minimizing the risk of failure during critical operations. Understanding this functionality is essential for anyone working with or operating systems that incorporate autothrottle technology.