{HEAD ~ A transponder testing apparatus} is integrated into {TAIL ~ the transponder} and verifies that the transponders are operating in accordance to Federal Aviation Regulations 
is integrated into
{ HEAD ~ A transponder testing apparatus } is integrated into { TAIL ~ the transponder } and verifies that the transponders are operating in accordance to Federal Aviation Regulations
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH