Alaska Airlines 737-900 MAX loses a door in-flight out of PDX
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Some thoughts
What we appear to know :
-low hr low cycle aircraft
-low pressure differential
-no passenger (fumbling) next to the door
-escape door blown out (photos from in and outside needed to know what went with it)…
What we do not exactly know in this thread or ever:
-the exact configuration(s) of a deactivated door and its mounting and cabin interior… (which includes the way it was designed AND engineered)…
-which configuration actually was in place ..
-the manufacturing and installation procedures, and if these have been changed much, and if there is a difference between the MAX 8,9,10,7…
- if procedures where followed (parts required, tooling required, could procedure be followed… did they (need) to force anything to install…)
The loss of Safety Culture and level of QC/QA standards at Boeing will take years to rebuild (consultants often use 10 years for that) … investigation in this failure may shed a light on if Boeing (and FAA) have really started with this process.
What we appear to know :
-low hr low cycle aircraft
-low pressure differential
-no passenger (fumbling) next to the door
-escape door blown out (photos from in and outside needed to know what went with it)…
What we do not exactly know in this thread or ever:
-the exact configuration(s) of a deactivated door and its mounting and cabin interior… (which includes the way it was designed AND engineered)…
-which configuration actually was in place ..
-the manufacturing and installation procedures, and if these have been changed much, and if there is a difference between the MAX 8,9,10,7…
- if procedures where followed (parts required, tooling required, could procedure be followed… did they (need) to force anything to install…)
The loss of Safety Culture and level of QC/QA standards at Boeing will take years to rebuild (consultants often use 10 years for that) … investigation in this failure may shed a light on if Boeing (and FAA) have really started with this process.
Last edited by A0283; 6th Jan 2024 at 10:58.
Looks that all hinge bolts are still there so they should be able to figure what happened without the missing door. Strange that the door blew so low with little pressure differential. There must have been something serious amiss. Not a crack or single bolt failure, more like no bolt nuts at all and hold in place by luck and paint.
Looks that all hinge bolts are still there so they should be able to figure what happened without the missing door. Strange that the door blew so low with little pressure differential. There must have been something serious amiss. Not a crack or single bolt failure, more like no bolt nuts at all and hold in place by luck and paint.
Looks like a pretty clean departure - those appear just to be seat trims/seat belts hanging out the opening:
could save on airport aggro for skydivers, passing over your house 50km from the airport, just jump out and land on your front lawn. I've often wanted to do this when coming from US to Heathrow and going over my house in Leeds, just jump out now and skip the 200mile/5 hour train ride home...
Looks that all hinge bolts are still there so they should be able to figure what happened without the missing door. Strange that the door blew so low with little pressure differential. There must have been something serious amiss. Not a crack or single bolt failure, more like no bolt nuts at all and hold in place by luck and paint.
Looks like it arrived from JFK at ~230P and was back in the air at 506P. Before that it had been in the air every day since being parked at SEA the whole day of the 1st.
Indications of pressurization issues appeared on the 4th:
https://theaircurrent.com/feed/dispatches/alaska-737-max-9-that-lost-deactivated-exit-had-recent-pressurization-issues/
Last edited by remi; 6th Jan 2024 at 11:57.
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Could the door have been damaged on the ground? Just looking at the white marks either side of the opening in the above photo.
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Makes me think of a BAC 1-11 windscreen and wrong sized fastners. Looks a lot like an assembly issue and the panel was only held in wth sealant and incorrect fastners or several fastners missing.
I am really tired of this Boeing "Shareholder Value" Enterpri$e!
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Putting on a speculators cap - there were fatigue cracks in the retaining features / fingers on the door. Had only one let go I would not expect the door to do more than leak loudly. But if several had cracks then when one finally crossed the finish line the rest go in a rapid cascade.
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Consultants bring knowledge and experience and are able to adapt to industry and company or come from them. Those that don’t should get a different label.
As far as I know in the whole 737MAX saga there have been no references to consultants….
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This incident could easily have involved fatalities.
Pretty sure that it's only the seat back cushion that's departed, in the first post's photo it looks like the seat frame itself is still there.
Still somewhat interesting that it could come loose like that; how are they attached, Velcro?
Still somewhat interesting that it could come loose like that; how are they attached, Velcro?