1.   Boeing and FAA officials said the current inspection order does not suggest that rudder failure caused the two still-unexplained crashes.

2.   Boeing and FAA officials, however, said the inspection order does not suggest that rudder failure caused the still-unexplained USAir crash in Pittsburgh.

3.   Investigators have cast doubt on some possible causes of rudder failure.

4.   Initially, the crew thought they had a rudder failure.

5.   Last week, Tyco was forced to sail back to South Africa after rudder failure.

6.   Tyco was forced to retire from the second leg of the Volvo Ocean Race with rudder failure after leading the eight-boat fleet for the last three days.