I do not understand one point. Why in modern aircraft I feel the air pressure changes when we change altitude? I hope that you as an expert explain to me this question ... mayby the aircraft, which are'm flying are questionable viability ;-)) ???
Hanek ..it sure depends on what type of aircraft you fly .... air pressure at the older aircrafts like 747 and 737 are set by the pilots by hand ... modern aircrafts like the 777 and A330 its automatic ... but its always a bit after ... the planes changes altitude faster than the airco can handle !!