91.   In theory the safety board has jurisdiction over all plane crashes unless they are shown to involve crimes.

92.   Injury rates, though obviously higher, are unknown, because local, state and federal data are fragmented and unreliable, the safety board said.

93.   Investigators for the safety board are trying to reconstruct the weather conditions.

94.   It contained fewer of the measures recommended by the safety board.

95.   Industry spokesmen and regulators maintained that the safety board had overstated the dangers and potential problems.

96.   It named Christopher Hart, a former member of the safety board, to a new post -- assistant administrator for system safety.

97.   It took four years for the safety board to conclude that a control-system flaw was responsible for both crashes.

98.   It reflects a stronger stance, and broader role, by the transportation safety board.

99.   It was, a federal safety board later would report, a cracked engine seal.

100.   It is unlikely that the safety board will conduct a major, expensive reconstruction of the wreckage, sources said.