1.   Especially worrisome is that terrorists hijacked four domestic airliners -- two each from American and United airlines -- for the precision attack.

2.   Most major airlines have changed their policies on flying the pets as checked luggage after a number of incidents involving animal deaths or near deaths on domestic airliners.

3.   A Chinese domestic airliner crashed Wednesday in southeast China, an airport official said.

4.   A Chinese domestic airliner crashed Wednesday in the southeastern part of the country, airport officials said.

5.   A Bosnian refugee was sentenced to four years in prison Friday for hijacking a Norwegian domestic airliner last November.

6.   A Bosnian refugee was sentenced to four years in prison Monday for hijacking a Norwegian domestic airliner last November.

7.   A domestic airliner was struck by lightning Monday morning just three minutes after takeoff, forcing it to make an emergency landing.

8.   A domestic airliner carrying four crewmembers was reported to have crashed Monday in a mountainous region near Taipei, police said.

9.   A domestic airliner carrying four crew members but no passengers crashed Monday in a mountainous region in northern Taiwan, police said.

10.   A domestic Indian airliner flying from New Delhi to northern India was reported hijacked Thursday, but it turned out to be a security maneuver, airline officials said.