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A comment on Crisis over The Atlantic: The near crash of Air Transat flight 236. Parent comment

Re:Crisis over The Atlantic: The near crash of Air Transat f... by iso1631 on Tuesday January 10, 2023 @08:38AM (#34324656)
I'm amazed they can measure the distance between two real non-fixed components down to a few micrometers (they wrote 0.635mm, implying somewhere between 630um and 640um)

If 0.635mm (an odd number itself which happens to be exactly 1/40th of an inch, or "25 thous" in American sizes) and they let it go that sounds really odd. That's literally the size of a grain of sand. If the concern is rubbing, sure that implies it will move during flight.

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Re:Crisis over The Atlantic: The near crash of Air Transat f... by bambax on Tuesday January 10, 2023 @08:47AM (#34324767)
0.635 mm is indeed an odd number. The thickness of a piece of 80gsm paper is 0.065 mm, so maybe what is meant is "about the thickness of ten sheets of paper"...?
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Re:Crisis over The Atlantic: The near crash of Air Transat f... by jamincan on Tuesday January 10, 2023 @11:23AM (#34327231)
It's precisely 0.025 inches.
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Re:Crisis over The Atlantic: The near crash of Air Transat f... by intrasight on Tuesday January 10, 2023 @01:55PM (#34329640)
Who else thinks that if a tolerance of the thickness of a sheet of paper, in a mechanic/maintenance setting, could cause the death of over 300 people, that there's a striking lack of fault-tolerance in the design.
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Re:Crisis over The Atlantic: The near crash of Air Transat f... by plasticchris on Tuesday January 10, 2023 @08:48AM (#34324780)
It sounds to me like they stuck a machinists shim in there, effectively a bit of precisely measured metal.
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Re:Crisis over The Atlantic: The near crash of Air Transat f... by nick889996544 on Tuesday January 10, 2023 @10:00AM (#34325809)
Shim feeler gauges would be readily available in most shops checking wear on moving parts. 0.0025 inches (0.635mm) was included in the first high quality (gearwrench brand) set that I looked up online.
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Re:Crisis over The Atlantic: The near crash of Air Transat f... by mrguyorama on Tuesday January 10, 2023 @09:38AM (#34325471)
Plane maintenance involves a lot of precise and specially designed tools.
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