[={TTU}=Zumbach]

You got "Select engine 1,2,3,4,5,6" and "Unselect engine 1,2,3,4,5,6" and "Select all engines" you got them from your controls if you do does keys when your engine are burning you can select one and stop it and then fly with the 3 engines .

And i found something for a beginer how to use the bombsight :