Autorotate safely to the ground?
Hahahahahaha! I like that!
The thrust levers arent attatched by wire to spring loaded butterfly like on piston engines so unsure how the situation would exist. If it was stuck "open" it must mean that the EEC has lost control of the engine or it is somehow stuck inbetween the soft/hard altn mode. However the HMU servos are driven by the EEC so if the servo failed??
Anyone else any ideas on how it could happen?
What to do, eh, move all pax/wieght where poss to the side with the high running engine, boot full of rudder and aileron trim, get the gear down and find a huge runway close to a hospital and school and grease it in!