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  #191  
Old 22nd November 2010, 09:43 AM
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Philip Argy Philip Argy is offline
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Post Fluke event says ATSB

Here's what the ATSB media release says:

Quote:
The rupture of an oxygen cylinder on board a Qantas Boeing 747 was a unique event and highly unlikely to happen again according to the Australian Transport Safety Bureau (ATSB).
On 25 July 2008, an oxygen cylinder ruptured in the plane's forward cargo hold about an hour into a flight from Hong Kong to Melbourne. Part of the ruptured cylinder punctured the fuselage wall and damaged the cabin, causing the plane to rapidly depressurise. The plane then made an emergency descent and landed at the nearest suitable airport in Manila, Philippines. None of the 369 passengers and crew on board were injured.
ATSB Chief Commissioner, Mr Martin Dolan, said investigators conducted a comprehensive investigation to determine the cause of the rupture, despite missing the key piece of evidence.
'This was an unusual and challenging investigation as the key piece of evidence, the ruptured cylinder, was ejected from the plane and is at the bottom of the South China Sea,' Mr Dolan said.
'Since we didn't have the ruptured cylinder, we exhaustively tested and evaluated identical cylinders, including cylinders from the same manufacturing batch. Through these tests we did not identify any aspect of the cylinder design or manufacture that could pose a threat.
'As well, the published maintenance procedures were found to be valid and thorough, and inspection regimes appropriate. The investigation also found no record of any other related instances of aviation oxygen cylinder rupture.
'Given the widespread and long-term use of this type of cylinder, it was clear that this occurrence was a unique event.
'In light of the investigation's findings, it is our view that the risk of a similar rupture and consequent aircraft damage remains extremely remote."
The ATSB investigation report, released today, also provides safety advice for operators and organisations involved with aviation oxygen cylinders and operators of pressurised passenger transport aircraft. This advice included improving aircraft passenger briefings to ensure passengers are able to readily use emergency oxygen supply when required. This has already been addressed by Qantas.
The final report is well worth a read, not least because of the painstaking detail of the damage that was caused. The 14.9 MB final report is here: http://www.atsb.gov.au/media/2409291/ao2008053.pdf

I'm certainly looking forward to a similar level of detail when we get the ATSB's report on Nancy-Bird Walton's no.2 engine incident - their interim report on that is scheduled for 3 December.
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  #192  
Old 22nd November 2010, 01:50 PM
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Arrow Information supplements

The ATSB has also produced two information publications as a consequence of this event:

Quote:
The ATSB research and analysis section has published two reports intended as
information bulletins for passengers and cabin crew of pressurised aircraft.
• Staying Safe During an Aircraft Depressurisation - Passenger information
bulletin. Aviation research and analysis report AR-2008-075(1)
• Aircraft Depressurisation – Cabin crew information bulletin
Aviation research and analysis report AR-2008-075(2)
The bulletins have been written to provide passengers and cabin crew with an
improved understanding of the potential effects of a depressurisation event on the
individual, and to provide advice regarding actions that can minimise the risk of
injury.
The information bulletins are available for download from the ATSB website at the
following addresses:



Cabin crew bulletin: http://www.atsb.gov.au/publications/...2008075_2.aspx
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