11.   But Boeing, Pratt and United officials agree that the phrase best reflects what they consider to be one of the most successful projects in commercial aviation history.

12.   But except for a limited number of flights, commercial aviation remained at a standstill.

13.   But Mulally said he believes that the demand for air travel will return and that the commercial aviation industry will grow again.

14.   Commercial aviation grew strongly last year, the FAA said.

15.   Commercial aviation has a far better accident rate than the railroads, but the FAA has been the more thorough agency in regulating safety.

16.   Commercial aviation grew strongly last year and will do so again this year, the Federal Aviation Administration said Wednesday.

17.   Commercial aviation in the United States enjoys an enviable safety record, and fatigue is by no means a major cause of accidents.

18.   David Clark, based in Worcester, Massachusetts, provides commercial aviation headsets and develops space suits for astronauts.

19.   Even Airbus officials have said in recent years that McDonnell Douglas represented little threat in the commercial aviation market.

20.   Even corporations with big corporate fleets depend heavily on commercial aviation for most of their business travel, he noted.