Qantas 744 Depressurisation
Evertonian
Hmmm....could be.....
BTW. He's still rapped about the beer.
(PS. I might have missed the discussion *sorry* amongst the 1100 odd posts, but was it true about nil instruments for landing?)
BTW. He's still rapped about the beer.
(PS. I might have missed the discussion *sorry* amongst the 1100 odd posts, but was it true about nil instruments for landing?)
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Interesting item
Heard from a close source that hundreds of little packets of peanuts and other similar sealed snacks exploded during the decompression. Peanuts everywhere apparently, quite a mess.
Buster, the Captain's ILS was disabled.
Buster, the Captain's ILS was disabled.
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Peanuts
Everyone who has read the Hitchhiker books knows how important it is to eat peanuts before the difficult part of a journey.
Peanut assisted or not, well done the crew.
Peanut assisted or not, well done the crew.
Last edited by two green one prayer; 24th Nov 2008 at 13:00. Reason: Typo removed
Possible Mechanism and Mode of Failure?
I thought it was interesting to note loose cargo partly sucked out of the hole in the fuselage. On page 22 of the preliminary report I note that the cargo loaded adjacent to the hole in the fuselage was not a container, but rather, a plasctic wrapped netted pallet of general freight.
The thought I pose is...What is the chance that during autoloading (powered floor rollers) that a partly collapsed or misshapen cargo pallet load rubbed against the curtains screening the oxgen cylinders, snagged the subject restraining clamp and unclipped it (or pulled it wholly from the structure) during the rearward movement of the subject pallet?
Furthermore, what are the chances that following loss of restraint by the clamp, that the now loose oxygen cylinder (restrained only by oxygen plumbing) was dislodged by further snagging by the pallet load under the forces generated by the powered cargo loading system thereby causing mechanical distress and damage to the oxygen piping and valve attachments on the head of the cylinder?
Only the (Hong Kong?) cargo loader would have known if the cargo fouled during loading. This type of event happens fairly often and is normally cured by loader chap reversing and backing up the pallet loading system and going at it again at speed.
I did not see any reference to any interviews with cargo loading personnel in the report?
Just pure speculation of course...but magic oxygen bottles need a head start.
Edited for clarity
I thought it was interesting to note loose cargo partly sucked out of the hole in the fuselage. On page 22 of the preliminary report I note that the cargo loaded adjacent to the hole in the fuselage was not a container, but rather, a plasctic wrapped netted pallet of general freight.
The thought I pose is...What is the chance that during autoloading (powered floor rollers) that a partly collapsed or misshapen cargo pallet load rubbed against the curtains screening the oxgen cylinders, snagged the subject restraining clamp and unclipped it (or pulled it wholly from the structure) during the rearward movement of the subject pallet?
Furthermore, what are the chances that following loss of restraint by the clamp, that the now loose oxygen cylinder (restrained only by oxygen plumbing) was dislodged by further snagging by the pallet load under the forces generated by the powered cargo loading system thereby causing mechanical distress and damage to the oxygen piping and valve attachments on the head of the cylinder?
Only the (Hong Kong?) cargo loader would have known if the cargo fouled during loading. This type of event happens fairly often and is normally cured by loader chap reversing and backing up the pallet loading system and going at it again at speed.
I did not see any reference to any interviews with cargo loading personnel in the report?
Just pure speculation of course...but magic oxygen bottles need a head start.
Edited for clarity
Last edited by FlexibleResponse; 2nd Dec 2008 at 12:43.
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Oops
Not sure if you all spotted this: Bird cannot keep its nose out of trouble - News - Travel - smh.com.au
I might have missed the discussion *sorry* amongst the 1100 odd posts, but was it true about nil instruments for landing?
All three ILS systems failed. Some of the Captain's instrumentation failed initially, but the displays were brought back to life by the use of the alternate source switches. The aircraft was maintained in VMC from the time of the failure until landing, but both pilots had full attitude and air data displays, and a number of alternatives were available had an instrument approach been needed.
In any event, the ILS on Manila 06 has been out of service for a few months.
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The ATSB final report for this incident will be released Monday 22-November-2010. It will be interesting reading, but unfortunate timing for Qantas, another reminder off a serious unusual incident during the uncontained engine failure incident.
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Executive summary and Links to the Final Report can be found here:
Investigation: AO-2008-053 - Oxygen cylinder failure and depressurisation - 475 km north-west of Manila, Philippines, 25 July 2008, Boeing 747-438, VH-OJK
Investigation: AO-2008-053 - Oxygen cylinder failure and depressurisation - 475 km north-west of Manila, Philippines, 25 July 2008, Boeing 747-438, VH-OJK
