Originally Posted by cuddieheadrigg
If the aircraft lost thrust it will descend rapidly even if full control is available elsewhere.
It won't descent more rapidly than usual as most of the time engines are kept to idle for normal operation descents.
Originally Posted by Svarin
I leave to your imagination why such an action would be taken. I have my own idea. And remember, the humans in the cockpit are not the only ones with access to flight controls. The aircraft itself usually has the final say over these controls.
Would you futher elaborate ... ?