The system 15, where {TAIL ~ the engine} is automatically started without {HEAD ~ an operator request} to start the engine 
The system 15 , where { TAIL ~ the engine } is automatically started without { HEAD ~ an operator request } to start the engine
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH