Observations & Ruminations about AAdvantage Account Numbers (consolidated)
Apr 2, 2010, 3:44 pm
#16
FlyerTalk Evangelist
Join Date: May 1998
Location: Massachusetts, USA; AA Plat, DL GM and Flying Colonel; Bonvoy Platinum
Posts: 24,233
Two accounts here. One ends in 0, one in 8.
Even if there is a slight ambiguity about the digit 0, which I don't think there is, there is no ambiguity whatsoever about a number of two or more digits that ends in 0.
Even if there is a slight ambiguity about the digit 0, which I don't think there is, there is no ambiguity whatsoever about a number of two or more digits that ends in 0.
Apr 2, 2010, 3:47 pm
#17
Suspended
Join Date: Sep 2006
Programs: AAdvantage PP
Posts: 13,913
Slow day here on FT. No GAs, FAs, or TAs horror stories to report?
Apr 2, 2010, 3:47 pm
#18
Join Date: Feb 2003
Location: DFW -
Programs: AA EXP 5MM, DL DM, Bonvoy Titanium, Avis CHM, National VIP
Posts: 556
4 in our family, all end in even numbers
Apr 2, 2010, 3:53 pm
#19
Senior Moderator and Moderator: American AAdvantage & TravelBuzz
Join Date: Nov 2007
Location: BOS
Programs: AA EXP, Marriott Titanium
Posts: 10,416
I know 4 AAdvantage numbers...all also ending in an even number.
Apr 2, 2010, 3:57 pm
#21
Join Date: Jun 2008
Location: Los Angeles, CA
Programs: AA EXP & 1MM, UA 1P, HH Gold, HGVC
Posts: 164
Mine ends with a picture of a Leprechaun. I think that's odd.
Apr 2, 2010, 4:12 pm
#22
In Memoriam
Join Date: Apr 2001
Location: dallas texas usa
Programs: aa plt 4.9MM LTAC
Posts: 14,828
7 accounts, all even last digit, no zero's.....
Apr 2, 2010, 4:13 pm
#23
Join Date: Jun 2007
Location: HOU
Programs: AA EXP, AMEX Plat
Posts: 79
I've seen at least six, and all have ended with an even number. A very interesting and astute observation, vasantn!
Apr 2, 2010, 4:20 pm
#24
Join Date: Apr 2009
Location: SEA
Programs: AA LT PLT; HH Diamond; AS 75K
Posts: 2,878
This is because AA creates a secondary account with the immediate following number to track illicit activity from mistake fares.
Apr 2, 2010, 4:23 pm
#25
Join Date: Oct 2006
Location: BNE
Programs: QF WP (LTG), AA, SPG Gold, IC Plat Amb, Hyatt Plat, HH Gold.
Posts: 804
Maybe the people with odd numbers get put in the hold, and we just never see them? 
Apr 2, 2010, 4:37 pm
#27
Join Date: Mar 2001
Location: Dallas
Programs: AA PLT/5MM; AS MVP GLD 75K; DL DM; EK SLV; HHonors DIAM; Marriott GLD
Posts: 4,092
Even (number 4)
Apr 2, 2010, 4:43 pm
#29
FlyerTalk Evangelist
Original Poster
Join Date: Jan 2001
Location: NYC
Programs: AA EXP / LT PLT / 3MM, Marriott LT Gold
Posts: 35,386
I'm pretty certain that the last digit is a check digit, but that still doesn't explain its evenness.
Apr 2, 2010, 4:50 pm
#30
Join Date: Jul 2009
Location: DFW
Programs: AS, BA, AA
Posts: 3,670
I love the fact that you try to teach elementary school math and grammar on FT. Keep fighting the good fight!! ^