1.   American Airlines has also waived the limit in two recent crashes.

2.   Aviation specialists said the four recent crashes remain statistical anomalies amid this massive volume.

3.   Better data might have tipped off safety officials to problems before two other recent crashes, experts say.

4.   A lack of proficiency in English among air traffic controllers and pilots is a problem around the world and has been cited in several recent crashes.

5.   About a dozen jets that use a newer engine model began flying a few days after the most recent crash.

6.   Airline accidents today, like the recent American Airlines crash in Queens, can puzzle safety experts.

7.   But they are not directly to blame for recent crashes of aircraft supporting the war in Afghanistan, defense analysts say.

8.   But two recent devastating crashes -- one on a commuter airline, American Eagle, and the other on USAir -- have heightened public concern.

9.   Despite the recent crashes, the odds remain overwhelmingly high that any given flight will arrive safely.

10.   For many people, the recent Amtrak crash in Illinois was just another sad story reported one night and forgotten the next.