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I'm curious about whether or not this modern airliner uses supercritical aifoils in its wing, or just conventional NACA-style airfoils.

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  • $\begingroup$ Although I don't have a confirmation from a reliable source, it sure uses it. Most of the transonic airliners today use it, including each aircraft of the A320 family, A330, and so on. I don't see a reason why would there be any exception with A220. $\endgroup$
    – Darjan
    Jul 26 at 20:23

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