Originally Posted by PBL
Does Autothrust have modes?
Yes it does.
- Thrust ("N1") mode where it holds a specific thrust, used in combination with autopilot vertical modes that control speed by varying pitch (climb and descent modes)
- Speed/Mach ("V/M") mode, where speed is controlled by varying thrust, used in combination with autopilot vertical modes that control a vertical path, or without autopilot
- Retard mode, only for automatic landing with Autopilot "LAND" mode, to reduce thrust during flare.