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