The method 1, wherein {TAIL ~ the jettison fuel pump} is {HEAD ~ a component} of a partially installed jettison system, and the jettison fuel pump functions only as an override fuel pump assist 
The method 1 , wherein { TAIL ~ the jettison fuel pump } is { HEAD ~ a component } of a partially installed jettison system , and the jettison fuel pump functions only as an override fuel pump assist
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH