<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by azmmza:
WHAT IS A S674ML CODE WHAT DOES IT DO?</font>
It is a 10% discount code, applied to the base fare, given to people who donated money to some non-profit foundation. Anyone seems to be able to use it as long as the fare is a non-web fare. You have to enter the code on aa.com's website to get the discount applied before purchasing the ticket.