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I found a little "door" on the upper deck of this A380: enter image description here

Source: Airliners.net

What is the purpose of that door, hatch, whatever?

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    $\begingroup$ At a guess a ladder for the emergency exit. $\endgroup$ Commented Apr 18, 2016 at 19:25

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It's for the emergency slide.

You can see it deployed here:

enter image description here

Source: Airliners.Net

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    $\begingroup$ It seems only the upper deck slides have a separate door (I assume it's because they don't fit at the normal location in the door). But I don't see the difference in the picture. $\endgroup$
    – mins
    Commented Apr 18, 2016 at 20:46
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    $\begingroup$ @mins, I don't know, but the inward slant of the upper deck door might have something to do with it. $\endgroup$
    – Jan Hudec
    Commented Apr 18, 2016 at 21:27
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    $\begingroup$ @JanHudec: From this book, the reason is about the size of the slides (length and width). Also as the slides are used as rafts, they need to adapt to the 700 passengers need. $\endgroup$
    – mins
    Commented Apr 18, 2016 at 21:47
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    $\begingroup$ See video of slide deployment $\endgroup$ Commented Apr 19, 2016 at 9:37
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Looking at Airbus's diagram gallery on the A380, this image suggests that the panel is to store and deploy the emergency evacuation slides.

Slide diagram

This is also supported by another picture from the same document, in which similar doors are seen under each second row entrance.

Door diagram

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  • $\begingroup$ Those planes are beasts!!! Saw one at an airport I connected through last week. $\endgroup$
    – Jon
    Commented Oct 10, 2019 at 20:17
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On the bottom deck the slide is packed inside the doors, but on the top deck the are in a small compartment underneath the door.

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