Last week the airline industry almost had a catastrophe. Worst yet, Qantas Airlines almost had it's near perfect safety record  shattered.  Fortunately, that didn't happen & that airline still has an 0 fatalities rate with a good safety record. Last week a Qantas B-747 suffered an explosive decompression at 29,000 ft due to an oxygen cylinder exploding. It ripped a huge hole on the fuselage of the airplane. No one knows why it exploded. We were lucky that airplane wasn't flying higher such as 39,000 -41,000 feet. If that same scenario happened at a higher altitude, some people would've died because the pilot may not have had enough time to descend to lower breathable altitude. At flight level 410 you could lose consciousness within 5 seconds without your mask. Australia's Civil Aviation Authority said some people's mask did not work. Thats no surprise being that at least one oxygen cylinder exploded. At this time, the investigation is still going on. Australia's Civil Aviation Authority has ordered inspections of the airlines B-747 fleet.