What is the engagement range of the A/THR with one engine running?

The engagement range of the Auto Thrust (A/THR) system on the A320 with one engine running is from forward of the IDLE detent to the FLX/MCT detent. This means that the A/THR will activate when the thrust lever is moved past the IDLE position towards the FLX/MCT detent.

This range is crucial for ensuring that the A/THR can provide the necessary thrust management during various flight phases, particularly when operating one engine. It helps maintain safe flight characteristics by managing thrust levels appropriately in the event of an engine failure or while operating in a single-engine configuration.

Understanding the specific thrust lever positions allows pilots to effectively manage the aircraft's performance and respond to different flight scenarios, particularly during critical phases of flight.