On Sun, Feb 10, 2013 at 8:36 PM, Ron Milligan
<ronmilligan@cox.net> wrote:
The pressurization on jet aircraft is controlled by an outflow valve on the outside skin of the fuselage. The engines supply a constant flow of bleed air mostly dependent on engine power setting. The out flow valve is about one square foot in size and usually is only about 1/3 closed. One bullet hole wouldn't affect the system in any observable (out flow valve position gauge ) way.
Hope that helps.
Ron
767 pilot