The Asiana Airlines Flight 214 crash while landing at San Francisco International Airport Saturday is the fifth crash involving commercial aircraft in the United States since the terrorist attacks on September 11, 2001.
Here's a look at the four other commercial airline crashes since then:
February 12, 2009: Colgan Air Flight 3407 crashed into a house as it approached an airport in Buffalo, New York, leaving all 50 aboard dead. Federal investigators said one of the main causes of the regional carrier's crash was pilot error.
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January 15, 2009: Roughly three minutes after takeoff, US Airways Flight 1549 hit a flock of Canada geese and was left with no power in both engines. With no chance to land at any nearby airfields, Capt. Chesley B. "Sully" Sullenberger glided the plane into the the Hudson River. All 155 passengers were unhurt.
January 8, 2003: Air Midwest Flight 5481, operating as a US Airways express flight, crashed into a US Airways hangar after leaving Charlotte/Douglas International Airport, 37 seconds after takeoff. All 21 aboard perished and one person on the ground was injured.
November 12, 2001: American Airlines Flight 587 was traveling from Queens to the Dominican Republic and crashed into the Queens neighborhood of Belle Harbor, killing all 260 on board and five people on the ground. The plane got caught in turbulent air after taking off right behind a Japan Airlines Boeing 747-aircraft on the same runway. In the first officer's attempt to stabilize the aircraft, the vertical stabilizer snapped off, causing the plane to spiral out of control.