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F35 jet has crashed into the sea...why?

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Bud:
You call this "option", i call this "scam".

ataradov:

--- Quote from: Bud on December 12, 2021, 09:27:00 pm ---You call this "option", i call this "scam".

--- End quote ---
Then don't buy from China. That's how options work.

dietert1:
The proposed approach of testing quality into products of unknown quality isn't the method preferred by professional QM experts. They prefer bottom up certification.
I am right now confronted with difficult to answer questions about unannounced audits and they want to see contracts that guarantee access for inspection. Unbelievable, similar to those stories about communist party inspectors entering private rooms. I was already asked to provide all source codes on a CD for inspection, of course under a contract that guarantees protection. Aha? And we have to write a folder describing our software development process. Maybe in the end it is about paying bribes, i don't know.

Regards, Dieter

ataradov:

--- Quote from: dietert1 on December 13, 2021, 08:43:58 am ---The proposed approach of testing quality into products of unknown quality isn't the method preferred by professional QM experts. They prefer bottom up certification.

--- End quote ---
And that is great. They have an option of buying from proven suppliers. They even have an option of buying automotive or aerospace qualified parts. Including from China. There are plenty of legitimate Chinese (and Asian in general) companies, you just won't find their products on eBay.

And hobbyists and low volume applications have an option of buying stuff from AliExpress.

Of course you need to apply brains and not use random junk in safety-critical applications. But arguing that availability of those parts somehow "makes" engineers use them is just wrong.

If you are doing something that can trigger an audit, get all the paperwork you can. But if you are doing some trinket you sell on etsy, then who cares what parts go into it.

And also, traceable and "legit" parts are not necessarily going to make for a better product, they will just make your life easier during the audit. When ESP8266 first appeared many "legit" module vendors laughed and called it "junk", but it turned that ESP8266 has much better hardware and firmware at a much more acceptable price. So they all had to stop laughing and start writing marketing "fighting guides".

I fundamentally disagree with the "western" model of only selling the high quality, but high price product not even trying to cover low end market. This was awesome approach many years ago, we all have stories of things designed and built in the 80s still working today. Those things were built to last and there was a reason to buy them at the asked price. But then all those companies dropped the quality, but because they are "western" they can still skate on popularity or reputation of a brand (most of which are sold to Chinese companies anyway). China covers low end market, and I really appreciate that. Chinese tools allowed many here to have a scope. And otherwise we would be sitting here waiting on Keysight to make a low end scope, which they will never do because it eats into their profits on high end models.

GlennSprigg:
I always loved a pilot-friend's description of a yoke/joystick...
He said, "You pull it, to make houses smaller, and push it to make houses bigger!!"
Never discount pilot error. How many crashes have been at bloody air-shows as well,
when pilots push the limits, and have a bit too much testosterone!!   :phew:

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