Several key dates that led to AAdvantage downfall over the years:
December 9, 2013: takeover by merger with US Airways closed
April 8, 2014: stopovers eliminated, Anytime Award prices raised (with no notice)
March 22, 2016: many sAAver award prices raised
May 11, 2016: Suzanne Rubin announces resignation
August 1, 2016: earnings become spend based
January 1, 2017: PQD added