31.   Monroe said that outfitting the entire U.S. commercial aviation fleet with the system could take one to five years.

32.   Midway, which occupies a square mile of land, has a history that stretches back to the dawn of commercial aviation.

33.   McDonnell Douglas denied its decision was a step on the way out of the commercial aviation business.

34.   Nor does the commercial aviation system.

35.   One is to establish a source of dedicated revenue for the development of high-speed rail, much as highways and commercial aviation have their own trust funds.

36.   Pierson has said that the merger is an attempt to monopolize commercial aviation by Boeing, and that Boeing wants to eliminate Airbus as a competitor.

37.   Possible areas specified in the bill include intelligence, law enforcement, border controls and commercial aviation.

38.   Probably because of its traditionally close ties to the military, commercial aviation argot brims with sometimes baffling acronyms.

39.   Rapid innovation has not been a hallmark of commercial aviation in recent decades.

40.   Secrecy envelops accident investigations in the other service branches as well, and that concerns safety specialists in commercial aviation who say a wealth of information is unavailable.