They all have that, it's part of the fairing. Are you asking what is purpose is, or why it's on that particular aircraft?
– Ron BeyerMar 05 '16 at 02:56
You should provide the source of your image, a direct link to the page containing the image and the author information. You forget nearly systematically to do it, and from a legal standpoint this is not possible (and in my opinion not ethical either). Here is an example.
– minsMar 05 '16 at 10:21
Possible duplicate of: https://aviation.stackexchange.com/questions/51883/what-is-this-tab-above-the-dc-10s-2-engine
– dalearnMay 25 '18 at 16:32
1 Answers1
17
As was said in the comments above, it is the support structure for the engine as seen in this drawing: