There are no test models of the 777X flying yet. And the source material specifically says "flaps", which are not at all the same type of "foldable wingtip" tha

There are no test models of the 777X flying yet. And the source material specifically says "flaps", which are not at all the same type of "foldable wingtip" that is being referred to. They refer to very specifically different things. The planes they are referring to are any other passenger jet, such as Spanair 5022, that crashed due to improper flap deployment. https://en.wikipedia.org/wiki/Spanair_Flight_5022 https://en.wikipedia.org/wiki/Spanair_Flight_5022