31.   This allows Peruvian airlines to add flights to the U.S.

32.   Three U.S. airlines have added routes this winter.

33.   While Winfrey said some airlines are adding flights to take up the slack, officials with several airlines said the additions were planned prior to the summer rush.

34.   Xtend allows the airline to add its own maintenance procedures to those of the manufacturer, and bring the system behind its own firewall.

35.   And the airline is adding more machines for self-service electronic check-in and using roaming agents with hand-held personal computers to check in passengers without baggage.

36.   By using more and smaller jets, airlines can add or subtract the number of flights they make to individual cities as demand warrants.

37.   Eight airlines have added outside consultants to resist bills circulating on Capitol Hill, and their trade group itself has sought outside help.

38.   Government tourism officials have chartered service from Miami Air, and some airlines have added flights or started using larger planes.

39.   However, other airlines have added other temporary security measures, such as bars inside cockpit doors.

40.   Israeli private airline Arkia added two extra flights.