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