Such configurations may exist where {HEAD ~ jettison systems} are a customer option, and include {TAIL ~ many twin engine} “regional jets” capable of meeting FAA Landing Climb and Approach Climb regulations in lower capacity configurations 
include
Such configurations may exist where { HEAD ~ jettison systems } are a customer option , and include { TAIL ~ many twin engine } “ regional jets ” capable of meeting FAA Landing Climb and Approach Climb regulations in lower capacity configurations
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH