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Dec 17, 2005 | 6:09 pm

#3

zrs70

FlyerTalk Evangelist

Join Date: Feb 2000

Location: Los Angeles

Programs: UA Plat 2MM. DL Plat, AS MVP

Posts: 12,906

DM stands for "Departure Management." You go on the DM list when you check in and can't get a confirmed seat for the cabin you want.