The fuel system further includes an engine monitoring circuit including an aircraft engine speed sensor operatively connected to {TAIL ~ a comparator} and a control relay selectively providing a signal output, with the comparator and control relay providing {HEAD ~ the signal output} when the aircraft engine speed sensor detects an aircraft engine speed greater than a predetermined threshold 
The fuel system further includes an engine monitoring circuit including an aircraft engine speed sensor operatively connected to { TAIL ~ a comparator } and a control relay selectively providing a signal output , with the comparator and control relay providing { HEAD ~ the signal output } when the aircraft engine speed sensor detects an aircraft engine speed greater than a predetermined threshold
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH