22 Mar 2016 #21 Alpha22 Well-Known Member Joined 22 Sep 2003 Messages 1,413 Location Cambridgeshire Visit site It's easy to see how those big holes (windows) could not contribute to cabin ventilation!!!!
23 Mar 2016 #22 CX54WEK Well-Known Member Joined 16 Mar 2009 Messages 2,501 Location Sheffield Visit site Well they don't if they are shut!