There is a small plate sticking out of an A320's engine narcelle with "No Step" written on it. I tried taking a picture of it, which in retrospect didn't turn out as good as I wanted it to be, but I hope it helps:

enter image description here

Anyway, I'm wondering what it's used for? It's only on one side towards the aircrafts body and it seems to be too small to be an aerodynamic surface. I suspect it's used during maintenance?

  • 4
    $\begingroup$ does this answer your question? aviation.stackexchange.com/q/11708/1467 $\endgroup$
    – Federico
    Aug 19, 2015 at 10:26
  • $\begingroup$ @Federico It does indeed. I knew that must've been asked here before, I just had no idea what to enter besides "No step thingy". I also had no idea it was on other engines as well. I live in a small secluded world where all flights I take are on an A320 family plane. $\endgroup$
    – JustSid
    Aug 19, 2015 at 10:30

1 Answer 1


It's a vortex generator explained in full in this question

"NO STEP" means don't put your foot on it. It's too weak to hold a person's weight and would get damaged.

  • $\begingroup$ Ah, that explains why I couldn't find anything when looking for this. Thanks :) $\endgroup$
    – JustSid
    Aug 19, 2015 at 10:29
  • $\begingroup$ The person could also be damaged (though the mechanic who has to fix the bent metal doesn't really care about that - they're probably likely to inflict more damage on you for breaking their airplane). $\endgroup$
    – voretaq7
    Aug 19, 2015 at 15:48

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