Later control methods reduced or eliminated this pressure loss.

There were occasional pressure losses in the warrens, of course.

I mean, what happens in a real emergency situation, a pressure loss?

The pilot immediately descended the plane rapidly to avoid too much pressure loss.

Adding them together means that mixing is done once, and this reduces the pressure loss in the intake system.

The pressure loss was also slow enough so that the atmosphere in the lavatory never rose above 31,000 feet.

However, the pressure loss through flex is higher than for most other types of ducts.

In case of pressure loss they would automatically shut tight anyway.

A pressure loss could have been too gradual for the crew to notice, he said, "but I can't imagine the airplane's warning system not working."