More than 300 Boeing 737 Max aircraft have been flying since 2017, with thousands of safe takeoffs and landings. That suggests the problem for Ethiopian Airlines – and possibly the 2018 Lion Air crash too – is one of the difficult sort of engineering troubles that happen intermittently, or even seemingly randomly, in very complex systems.

Boeing has already said it will update the aircraft’s software. Any fixes will have to be checked not only to ensure that they handle whatever the exact problem is that’s identified by crash investigators, but also to make sure they don’t cause other unexpected errors. That will take its own amount of time. In the meantime, all the Boeing 737 Max aircraft in the world are on the ground, waiting.

Kłopoty Boeinga lecącego do Warszawy. Awaryjne lądowanie........
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