{HEAD ~ A pipeline} for conducting air for air conditioning in {TAIL ~ aircrafts} includes a body portion formed with foamed plastics material or with a dense plastics material 
{ HEAD ~ A pipeline } for conducting air for air conditioning in { TAIL ~ aircrafts } includes a body portion formed with foamed plastics material or with a dense plastics material
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH