Since the early 1960s, air in passenger jets has typically combined re-circulated existing cabin air with air bled off the engines. The air pulled into the engines is cooled and compressed before it is pumped into the the plane. It is this bleed air that Williams' suit claims was contaminated. See how bleed air enters a plane's ventilation system Â».
Get those medical secrets: http://www.health101.pw/Medical-Secre... This video shows you how to say or pronounce Palpable Disease. Audio is from cancer.gov.1  Education. 2  Creative Commons Attribution license (reuse allowed). 3  Remix this video.et those medical secrets: http://www.health101.pw/Medical-Secre... This video shows you how to say or pronounce Palpable Disease. Audio is from cancer.gov. 1  Education.
A pall is the heavy cloth that is draped over a coffin. Hence the metaphoric term casting a pall on a gathering of people, by announcing bad news to the group. By metonymy, the term pallbearer is used to signify someone who bears the coffin which the pall covers.