What is the engagement range of the autothrust system with both engines running?

The engagement range of the autothrust system is primarily from the IDLE detent to the CLB detent when both engines are running. This range includes all thrust settings that are typically used for normal operations, from the minimum thrust required for engine idle to the climb thrust available for ascent.

When the thrust levers are moved forward, autothrust can engage and provide thrust management to maintain the desired airspeed. This engagement range is crucial as it allows the autothrust system to efficiently adjust engine thrust during various phases of flight, ensuring optimal performance and fuel economy while adhering to operational limitations.

In contrast, options mentioning reverse IDLE or stating the parameters incorrectly would not accurately reflect the intended operational parameters of the autothrust system. Additionally, mentioning the FLX/MCT detent specifically suggests modes that may not be applicable for all phases of engine operations or could imply incorrect ground procedures, whereas the CLB detent signifies a more relevant and appropriate engagement range for typical climb operations.