The midair collision that killed 67 near Washington and the fiery plane crash in Philadelphia and a plane crash in Alaska that killed 10 are only the most high-profile disasters.

Concerns that a deadly collision could occur at Reagan National Airport had long been building. But attempts to draw attention to potentially dangerous conditions sometimes went unheeded.

On the evening of Jan. 29, a military helicopter crashed into a commercial passenger plane that was attempting to land at Ronald Reagan Washington National Airport. The two aircraft fell into the ...

The National Transportation Safety Board on Friday afternoon is set to release additional details on the Jan. 29 midair collision near Reagan National Airport.

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