:Speaking of myths, I have removed the following statements from the article, because they are false.   

 ::The aircraft's captain may elect to maintain cabin altitude at sea level on request to address compelling pressure-sensitive medical needs of a particular passenger, but at an operational cost to the airline arising from fuselage fatigue. 

 ::Nowadays, nearly all commercial airliners can maintain their cabin altitude at sea level throughout the flight if the captain sees a compelling reason to do so.