Washington plane crash: The deadliest US airline crash since 9/11

The crash adds to a list of deadly airline accidents in the U.S., with the most recent occurring in 2009, when a Colgan Air turboprop crashed in Buffalo, New York, killing 50 people. Other notable incidents include the 2001 American Airlines crash in New York, which killed 265 people, and the September 11 attacks, where four hijacked planes resulted in thousands of casualties.