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Old May 18, 2012 | 3:16 pm
  #7  
fieldeng
 
Join Date: Dec 2010
Location: Tulsa, OK
Programs: AA EXP, UA Silver, SPG Plat, Marriott Plat
Posts: 1,264
F - First
C - Business Class
Y - Coach

These are typically booking codes for tickets hence the letters.
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