Punctured pressure cabin.

In message , Johnny Bravo
writes
On Wed, 31 Dec 2003 23:06:55 +0000, "M. J. Powell"
wrote:


There has been a bit of a furore over here concerning the new US
requirement to airlines to supply air marshals when requested. The
concern is mainly over the possible puncture of a pressure cabin.
What do readers think is the result of decompression via a bullet hole?

Boeing engineers estimate that a 9-inch diameter hole would be
necessary before the automatic pressurizing equipment of a 767 would
be unable to maintain cabin pressure.

Or roughly 650 holes, each 9mm across. I can't imagine a gunfight
inside an airliner that would end up with 650 holes in the outer skin
of the plane since most of the rounds are going to be fired to the
front or rear. Even so, most of those holes can easily be plugged for
the short duration of the flight to the nearest airport, just put one
of those stupid platic covered "In case of Emergency" cards over them.
That would take care of about 250 of them on a 767, I'm sure the
in-flight magazines would easily take care of 600-700 more. Bubble
gum would be good for another 100 or so. What's that, about 5,000
total rounds fired (assuming 1/3 of them hit a wall and leave a hole)?
An average of 20 per passenger, two whole post-ban clips before the
air pressure of the cabin becomes compromised and requires a decent,
which would be in progress anyway once the flight crew becomes aware
of 5,000 rounds fired inside the plane.

Wow!

Mike
--
M.J.Powell