ATA surprised the airline nerd world yesterday by announcing that it is effectively shutting down its Indianapolis hub. The press release linked above offers all of the details, but the short version is that ATA will discontinue most of its Indy flights by April 10th. The Northwest Airlines crew must be cheering, as they’ve been throwing cheap flights out of Indy for the past year in an effort to drive ATA out. Well done. On the negative side, Northwest is not known for maintaining low fares when there’s no competition.