When it comes to shutting down the engine and fuel/electric systems, how easy is it for Joe Public to do this if they come accross a downed helicopter? I know in the world of motor racing (all disciplines) there is a sign pointing towards the cut-off, and if someone comes accross a car crash and the engine is running, it's fairly obvious how to turn it off. In a helicopter, however, if you are trapped after a crash and in no fit state to help the would-be rescuer, what clues do they have?
The military have "Rescue" arrows and signage on all their birds . . .