11.   Both airlines said Wednesday that their revenue from the deal had declined in recent years.

12.   A decision on the others will come later, the airline said.

13.   After that crash, the airlines said they would install detectors.

14.   Airlines already have said they object to measures that cause additional delays and might anger passengers.

15.   Airlines said delays would decline, however, as planes were returned to service.

16.   Airlines say most of the tickets they sell are nontransferable for security reasons.

17.   Airlines say the e-mail sales approach lets them sell seats that would normally go unused and do so in a way that costs them almost nothing.

18.   Airlines say they are determined not to fail this time.

19.   Airline says its investigating.

20.   Airlines also say low interest rates are working to their advantage in financing the purchase of new planes.