Take the 2-minute tour ×  Normally you feel pressure in your
ear, if the air pressure changes, e.g. if you're ascending or
descending very fast. But why do I feel this pressure also in
airplanes where the pressure in the passenger room should be
constant?  share|improve this question Related: Best way to make
my ears pop? –  hippietrail Feb 8 '12 at 12:33 add comment  5
Answers  up vote 27 down vote accepted  The cabin pressure is
not constant - it's allowed to drop as the plane ascends, within
safe levels (typically down to the pressure one would find at
between 1500 and 2000 meters of altitude).  The reason for this
is that a pressure difference between inside and outside puts
stress on the fuselage. Reducing the maximum difference allows
the fuselage to be lighter, which makes the plane consume less
fuel.  share|improve this answer So what would happen in theory
if there were no cabin pressure in the plain? Would your ears
completely blow? –  JD Isaacks Feb 8 '12 at 17:45 @JohnIsaacks
the passengers and cr