On Jul 27, 11:05 pm, Pits gmail.com> wrote:

"An important point is there are back-up, portable oxygen masks
available in every aircraft so if a mask above you doesn't work there
is a portable mask available from the cabin crew," he said.

If a cylinder fails, how many masks does it feed? Therefore, how many
portable masks are carried on board?

On Sun, 27 Jul 2008 06:05:25 -0700 (PDT), Pits gmail.com>
wrote:

Heard a report last night (or was it this morning) that there is no
trace of the missing oxygen bottle. If it had exploded thereby causing
the pressure hull breach, then I would have expected some of the
bottle bits to be imbedded in the interior of the cargo bay. According
to the report, remembering of course that it is a media report, no
fragments of the bottle have been found.

Maybe the breach was caused by another factor and the missing oxy
bottle went AWOL, in one piece, through the hole.

Anyway, just another bit of 2 cent conjecture.

Regards
Stephen

Stephen James wrote:

http://www.theage.com.au/articles/2008/07/28/1217097102556.html

"INVESTIGATORS have found fragments from an oxygen bottle blasted
throughout the baggage compartment on the Qantas Boeing 747 that was
forced to make an emergency landing in Manila after a mid-air explosion
on Friday.

The discovery of fragments embedded in baggage and in the compartment's
ceiling strongly supports the view that one of several cylinders
exploded, tearing a three-metre hole in the fuselage and forcing the
pilots to descend rapidly for thousands of feet."

On Jul 28, 9:05 am, Schismatic noname.com> wrote:

On Mon, 28 Jul 2008 01:05:13 GMT, Schismatic noname.com> wrote:

Pits wrote:

I know that grease and oxygen dont mix, but does anyone know if any
practical experiments have been done to see just what would happen if for
instance grease was applied to the threads of an oxygen fitting?

What is our speculation on how it would work out? Big bang? Slow burn? Oxy
in cylinder burn and expanding gasses eventually shatter bottle? Fire go up
the tubes of the oxy systems? What was the cause of the oxy system disaster
which killed those 3 astronauts on the launchpad during a simulation?

Does burning oxygen leave traces like a conventional explosive would?

I know all these things will be answered in time (maybe a couple of years
from now) but in the meantime, lets have a healthy round of uninformed
speculation (although with the technical expertise on this newsgroup, it is
more likely to be well-informed speculation).

Re filling of oxy tanks with nitrogen (I didnt hear about that one. I'll
have to talk to my inside sources more often), I am old enough to remember
the story I was told as a new apprentice of how an...

On Jul 28, 11:22 am, Pits gmail.com> wrote:

I can't get over the irony. The first thing you reach for during
depressurisation, was the first thing to leave the aircraft!

"Bill Whale" optusnet.com.au> wrote in
news:488d5df0$0$1022$afc38c87@news.optusnet.com.au:

Many years ago there was a pilot attempting to set an altitude record over
Adelaide in a Cessna of some sort (182,180 or 185 I think). It exploded at
altitude and if I recall correctly the cause was determined to be exactly
that, lubrican on the threads of the oxygen bottle.