Additionally, {HEAD ~ the integration} of both functions in a single unit allows {TAIL ~ elimination} of duplicated service devices and a further reduction in size, cost, and weight in the aircraft itself 
allows
Additionally , { HEAD ~ the integration } of both functions in a single unit allows { TAIL ~ elimination } of duplicated service devices and a further reduction in size , cost , and weight in the aircraft itself
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH