Spodman ,. .. .Now , don't consider the turn as your only option.. .In some cases you may have the time to coordinate with ATC and staying on the airway may represent the best course of action due to terrain or traffic.. .. .An emergency descend can have different reasons and levels of urgency to be executed .. .We all know the scenario for which we train the most but you can also find yourself in a situation which perfectly allows for a more prepared and coordinated event.. .. .Rgds. .. .manuel