{HEAD ~ Boom} 16 is mounted on {TAIL ~ a yoke 32 subassembly} that includes a pair of arms 34 with outwardly protruding pins 36 
is mounted on
{ HEAD ~ Boom } 16 is mounted on { TAIL ~ a yoke 32 subassembly } that includes a pair of arms 34 with outwardly protruding pins 36
HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH