WASHINGTON (AP) -- Delta Air Lines Inc., the world's biggest carrier, spent $610,000 in the fourth quarter to lobby on passenger services, aviation safety and capacity, and appropriations for the Federal Aviation Administration, according to a recent disclosure form.

The Atlanta-based airline operator also lobbied on bills that would require air carriers to publish customer service data and flight delay history, and prohibit the transportation secretary and the FAA from conducting slot auctions, implementing congestion pricing, limiting airport operations or charging certain use fees at airports.

The government under the Bush administration had wanted to auction takeoff and landing slots at three New York area airports to reduce congestion. Several U.S. airlines objected. A court blocked the FAA's plans.

Former congressman Ray LaHood, the new transportation secretary under President Barack Obama, has promised a sharp divergence from the Bush administration on several thorny transportation issues. LaHood has promised to eliminate auctions for takeoff and landing slots at New York's three major airports.

Delta acquired Northwest Airlines in late October in a stock swap deal that created the world's biggest carrier.

Delta spent more than $1.2 million in the third quarter to lobby the federal government, and nearly $1.8 million in each of the first two quarters of last year.

Sametta Barnett, formerly of the Homeland Security Department, was among those registered to lobby for Delta, according to the form posted online Jan. 21 by the House clerk's office.

Besides Congress, Delta lobbied the departments of Transportation, State, Homeland Security and other agencies in the October-December period.