61.   Airlines also have the option of matching each piece of luggage to a passenger who has boarded the plane.

62.   Airlines also would have to provide food, water and restrooms when bad weather or emergencies hamper departures.

63.   Airlines have several approved ways of doing that, including the use of bomb-detection machines, bomb-sniffing dogs or manual searches.

64.   Airlines might have to eliminate flights in some cities with low passenger demand, where money from cargo makes up for a lack of passenger revenue, Burnett said.

65.   Airlines will likely have to run larger airplanes to cover their costs.

66.   Airlines would also have to give up-to-date and accurate information about delayed and canceled flights as well as establish clear policies for accommodating passengers who are delayed overnight.

67.   AirTran officials say they would try to pick up some of the volume, but that the airline has only two backup planes.

68.   Airlines have financial incentives to keep putting new features on their Web sites.

69.   Airlines have five years to install the new systems, but many are retrofitting them now.

70.   Airlines have greater incentive to consider Airbus now that there are only two makers of large commercial aircraft left, he said.