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The one labeled as "1" in the picture. And I'm having doubts about "2", it is an air supplier for cabin, right? Or am I wrong?

enter image description here

Thank you.

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2 Answers 2

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The item 1 is a Krüger flap, a leading edge device which allows the wing to operate to a higher angle of attack. The wing-root fairing makes a small triangular segment necessary; outboard of it slats are used.

The item 2 is a NACA inlet for cabin air, as commented by @mins.

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    $\begingroup$ In the wiki regarding Krüger flaps only Boeing is mentioned. Does it mean the Airbus is using slabs only? $\endgroup$
    – Crowley
    May 3, 2017 at 14:44
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1) Appears to be where the inboard leading edge slats retract into. 2) Ram air inlet for the air conditioning/equipment cooling.

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