The airline was able to expand in late 2002 as the prices of airplanes fell, allowing it to add 73 routes and open operating hubs in Italy and Spain.
"We could see network carriers shrink to a level where they're practically operating from hub to hub," says Hank Dittmar Hank Dittmar, Reconnecting America's president and co-author of the "Missed Connections" study.
Last week the F.A.A. announced that it had won an agreement to reduce delays at O'Hare Airport in Chicago by having American Airlines and United Airlines, which both operate hubs there, reduce their peak operations by 5percentt.
The people whose computers were searched, the government said, operated hubs that coordinated the sharing of files.
Generally, the big airlines have been quicker to eliminate nonstop flights between cities where they do not operate hubs than to trim back service from their hubs.
The airlines would like to see busy airports enlarged; that is what both United and American Airlines would prefer at O'Hare, for instance, where they operate hubs.
They own and run airlines, and fleets of lorries and vans; they operate hubs at airports where the sorting is done.TNT is the outsider in the group, being smaller and more competitive on price.
Americans depend so much on network and budget airlines for domestic as well as foreign travel that they moan about them the way Britons complain about privatised railways and expensive train prices.This time the federal lawsuit has been brought on behalf of six states (plus the District of Columbia) where American or US Airways operate hubs.
Senator Arlen Specter, a Republican of Pennsylvania, where US Airways operates hubs in Pittsburgh and Philadelphia, wrote a letter to James E. Goodwin, the chairman of the UAL, urging him to press ahead with the Justice Department so that it would be forced to make a final judgment on the deal.
Traditional carriers operate hub-and-spoke networks where 60% of passengers hop on connecting flights to get to their final destinations.
