Mega corporate travel agency air transactions processed through ARC in March dropped by 5.8 percent year over year,

the largest such decline since October 2009, following gains in January and February 2012. Including American Express, BCD Travel, Carlson Wagonlit Travel, Expedia's Egencia, HRG and Omega World Travel, the mega category's March reduction coincided with decreases for other ARC categories, including "online" (down 3.3 percent) and "other" (down almost 6 percent).