What does BETA indication mean when coupled with a torque value greater than 0?

The BETA indication, when coupled with a torque value greater than 0, signifies that the engine is in reverse thrust. This occurs when the propeller blades are positioned to direct thrust forward, which is essential for decelerating the aircraft during landing or slowing down in-flight. In this scenario, the presence of a torque value greater than 0 indicates that the engine is actively generating power, but the thrust direction is reversed.

This is crucial for pilots to understand, especially during critical phases of flight, as reverse thrust can significantly alter the aircraft's speed and direction. Recognizing BETA indications, along with the corresponding torque values, helps ensure proper aircraft handling and enhances safety during operations like landing or taxiing.

The other choices do not accurately represent the implications of a BETA indication with a positive torque value. The state of idling would not engage reverse thrust or show a torque value above zero, while normal operating conditions would imply forward thrust. Shutting down the engine would also result in a torque value of zero, making it incompatible with the presence of a positive torque reading.