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Air New Zealand Airbus crash in the Mediterranean (Perpignan) 2008, seasoned German & NZ crew, including engineers, no one understood, until too late.
This one goes beyond pilot error into the realm of utter stupidity.
Functional test of alpha protection. The test instructions are very clear that the test MUST be conducted at 14000 ft and not less that 10000 feet AGL. Deliberately stall the aircraft to confirm that the alpha protection prevents the stall. Anyone who tries this at low level is way beyond stupid and certifiably insane. They did it at low level. DUH.
With all due respect Mr. Geek.
If it had been a Boeing non FBW, even with the frozen AOA vanes, it would have just recovered and flown away. The crash occurred because the computers got in the way and changed the control laws 2 or 3 times (Sorry, I last read the accident report a few years years ago so I don't remember the exact sequence.)
A clear case of "Loss of Control-Unrecognized or Not Understood Control Configuration Change."