Originally Posted by
JDiver
Fly Mexicana or Click! Mexicana, give them your AAdvantage number, it will probably post within a week or two - but possibly not. These are
redeemable, not EQ miles, of course, but they all count, or we wouldn't be
here 
. IMO, the easiest is to photocopy and use snailmail, lean back and relax... Ąsalud!
I realize that this post is pretty old, so it may be updated lately, but you do earn EQMs when you fly on Mexicana on AA codeshare tix:
Elite Status Qualification
You can earn elite-qualifying miles, segments, and points that count toward AAdvantage GoldŽ, AAdvantage PlatinumŽ and AAdvantage Executive PlatinumŽ status on American Airlines codeshare flights operated by Mexicana when your ticket reflects an "AA" coded flight number. View more information about elite status.
http://www.aa.com/aa/i18nForward.do?...s/mexicana.jsp
That said, it has been almost 4 weeks and nada of the ORD-MEX-ORD flights hasn't posted