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Boeing 737 exposee

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IainB:
Relevant, and similar to (along the lines of) what I wrote above:
Mish: Boeing 737 Max Unsafe To Fly, New Scathing Report By Pilot, Software Designer

Attached is a .mhtml copy in case it gets lost down the memory hole (I don't trust Wayback):

holt:
@IainB Awesome feedback, Iain.  :Thmbsup:
I'm reminded of tests showing that a less 'flammable' fuel was developed, less prone to igniting in a crash, then discarded as less profitable, due to 'gallows engineering' (or 'gallows economics').
In aircraft design theory, 'aerodynamics' is prioritized above 'anti-corrosion' (or something of 'words to that effect'), which it should be; then every means of employing anti-corrosion into the design is employed. Thus; corrosion-prone aluminum was/is used (prior to the invention of composites) in construction; then it is electroplated wherever possible with corrosion-resistant anodize and epoxy primer, 'wet-installed' with more epoxy primer and catalytically cured silicone rubber, with drain holes to eliminate natural sumps (hidden pockets where water can collect and corrode), and so on. But -as per my ^first video- if holes that are supposed to be pre-drilled by CAD/CAM in sub-assemblies with micro precision (for later assembly into the main body) are instead pre-drilled by hand (being 'sighted in' by macro eye-balling), then the aircraft mechanic ends up having to 'wobble' the drill bit to 'match up' the matching holes in sub-assembly and main body or next-larger assembly, thus 'going oversize' and ending up with oval holes anyways, that weaken the design and become pockets of future corrosion-prone 'design discrepancies'. Please excuse me for waxing a bit wordy, but I am a former 'blue collar' aircraft industry worker-mechanic (not an engineer), and I've seen (and avoided) such.
It sounds like the bottom turds could benefit from a liberal application of 'de-turd-gent' to clean up their revolving door act.

BTW, every individual aircraft part (be it a leading edge slat, or an angle, or a stringer, whatever) was always pre-stamped with a serial number, ending in a dash-even for right hand, or dash-odd number for left hand, assembly. In the 9-11 Twin Towers documentary, an aircraft engine ended up on a sidewalk, battered into junk; every part of it should have had such a serial number pre-stamped onto it, identifying both the part, and the aircraft type (but I never saw anyone's investigation of that).
Thanks for your most informative and professional feedback.  :up:

IainB:
My mind can't abide a puzzle. It habitually seems to set itself in a sort of alert, problem-solving state, almost as though looking for something to occupy itself with. When it finds something interesting - which could vary from (say) figuring out the best way to clean a laundry utility-room, or fixing a car's wing mirror, or analysing a puzzling situation, program error, or maths puzzle - it becomes fascinated and won't let it go until satisfied that the area of interest has been understood sufficiently fully. Very often, it won't let me sleep. It's difficult sometimes to determine which part of me is the master and which the servant.

At school, I had a pretty useless maths teacher and so I used to teach myself maths, using books of past UK Cambridge GCE "O" Level exam papers, with worked examples of all the answers. I would study at night up till bedtime, and sometimes - with a particularly knotty problem - I would refuse to look at the worked answers and would go to bed with an unresolved math question still puzzling my mind, and I would tell my mind to solve it whilst I was asleep. Invariably, the answer would be clear in my mind on waking. I had read about this idea in a book on self-hypnosis, so I applied it, and it seemed to work.

Well, I had invested quite a bit of my cognitive surplus in the subject of this interesting post by @holt and it must have grabbed the attention of my subconscious, because, though I thought I had finished with the subject by contributing what I did above, for a couple of days I have had a niggling feeling - my subconscious sort of tugging at me - that I was missing something very relevant to this subject, that I actually already knew about, but had not put in the puzzle to explain it.
When I woke up this morning, it was there in my mind - I already knew about the type of legal, government-sanctioned corporatised, careless and indiscriminate killing of innocents that the Boeing case seemed to typify - the word "Aberfan".

I went to school in North Wales. An important aspect of the Welsh character is that they understand the need for education as a tried-and-tested way out of serfdom/poverty/dependence, and they take up teaching posts where they tend to remain fiercely nationalistic and teach that nationalistic sense (as propaganda - e.g., making Welsh compulsory) to children in school – and why shouldn’t they? It’s their country (or it was), after all, and they are heartily sick of the history of the English trampling all over them and oppressively milking them economically for all they are worth – e.g., in the coal and slate mining industries. – and with an utter disregard for the safety/lives of the Welsh (No, don't mention all those accidental pit deaths. Oh dear, what a pity, never mind.).

If there is any single event that indicated unequivocally that the English were unfit to rule Wales – either economically or otherwise – one that stands out would have to be the Aberfan disaster. (Refer Wikipedia, and which I wrote about in
Re: Thermageddon? Postponed! as an example of corporate psychopathy.)
This was a disaster waiting to happen – a manmade ticking timebomb building up in Aberfan. It was the catastrophic collapse of a colliery spoil tip in the Welsh village of Aberfan, near Merthyr Tydfil, on 21 October 1966, killing 116 children and 28 adults. It was caused by a build-up of water in a waste tip, the accumulated rock and shale, which suddenly started to slide downhill in the form of slurry.
The black humour at the time had it as: “What’s black and goes to school on Friday? A number 7 tip.”

This was an avoidable disaster: it had been predictable and was a predicted risk, yet the risk had been ignored in characteristically cavalier fashion by the English National Coal Board. The official inquiry blamed the National Coal Board for extreme negligence, and its Chairman, Lord Robens, for making misleading statements. Parliament soon passed new legislation about public safety in relation to mines and quarries. (Oh dear, what a pity, never mind.)

The Welsh were arguably second-class citizens then, and will probably remain such until they gain full sovereignty for Wales. After that, they will only be able to hold themselves accountable for any further corporate negligence.

You could thus label the Boeing 737 MAX crashes "the Aberfan syndrome", because the Aberfan event predated the Boeing 737 MAX crashes. They are of the same type - i.e., legal, government-sanctioned corporatised, careless and indiscriminate killing of innocents. But that's not enough - what about the cause? The resulting disasters are created/caused by a Corporate Psychopath.
In the film The Corporation, they reviewed the personality disorder "psychopathy". (A psychopath is a person with chronic psychopathy, esp. leading to abnormally irresponsible and antisocial behaviour.)
They gave this checklist of criteria to identify the disorder:
    1. Callous unconcern for the feelings of others.
    2. Incapacity to maintain enduring relationships.
    3. Reckless disregard for the safety of others.
    4. Deceitfulness: repeated lying and conning others for profit/financial gain.
    5. Incapacity to experience guilt.
    6. Failure to conform to social norms with respect to lawful behaviours.

In the film, these criteria were shown to be met by many/most of the legal entities (legal persons) known as "corporations", thus demonstrating that society has legalised these special kinds of psychopaths to operate in society, where they can and do cause tremendous harm - e.g., including such things as economic dependency and control of communities, or a deadly (toxic) environmental footprint - sometimes both, as in the case of the US corporation Exide in their factory in Mexico.

--- End quote ---

holt:
Matthew 9:16 No man putteth a piece of new cloth unto an old garment, for that which is put in to fill it up taketh from the garment, and the rent is made worse.

Mark 2:21 No man also seweth a piece of new cloth on an old garment: else the new piece that filled it up taketh away from the old, and the rent is made worse.

If the Aircraft Sheetmetal Mechanic is presented with a pair of predrilled parts that go together, and if either part has hole/s that are even 1mm off, s/he has no choice but to wobble the drill bit and oval or oversize the hole at least enough to put in a fastener. He is not allowed to substitute a different kind of fastener than specified, so unless it is a squashable rivet that can be deformed to help fill up the oblong hole, he must go oversize, such as reaming and substituting a 1/4 inch fastener in place of a 3/16 inch one.
If he does, it will change the flexibility of the entire row of fasteners, creating a stress point in the oversize hole location; the oversize fastener will not allow even flexing of the part, throwing an uneven, greater burden on surrounding adjacent fasteners and parts.
Now, add a few tiny gaps where the oblong hole did not quite get totally filled up; magnets for corrosion. On a large scale we call areas that collect liquids such as rain water, hydraulic fluid, and the like, as ''natural sumps', and often the instruction is to drill a drain hole to keep it drained out (believe me, they don't drill holes randomly, they follow instructions dictated by Engineering in AFCs [Air Frame Changes]). In a little gap in an oblong hole, it's just a 'gap', but prone to corrosion.

Intergranular corrosion - aluminum has 'grain' just like wood grain. Much the same way that termites furrow deep into the core of a solid piece of wood, intergranular corrosion can take advantage of tiny gaps in oblong holes to invade deep into solid aluminum parts. It does take time, but it's not supposed to happen at all. 

holt:
TWA 800 Animations

TWA Flight 800 Remastered Re-creation
Combination of light-hearted student passengers and dreadful 'impending disaster' music.
(edit: This is a seriously disturbing video. In case you are not prepared, I'll post here a repeat of a few viewers' comments:
quote:
-Mostly just upsetting.  Recommend do not watch.  God rest their souls.
-This has to be the scariest way for anyone to die...
-That may be one of the most horrifying things i have ever watched....I think i need a tranquilizer.
-Horrible...absolutely horrible to go this way...Poor souls RIP ..
-I wished I wouldn't have watched this. My stomach has been in a knot ever since. My prayers to all affected by this tragic loss of life.
-No one deserves to die this way. It is so sad to see what they had to experience. May God bless them and those who suffer in the aftermath of this tragedy.
-I can’t believe they actually used Final Destination. I mean we all know the movie based it on the crash, but come on.
-This is about as bad as it gets.....what a horrific way to die.
end quote
Please note: the music and part of the TWA Flight 800 Remastered Re-creation vid is a rip (not by me) from Final Destination, but proper credit is given and it really fits.

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