The pilots of a Southwest Airlines jet were primarily responsible for a 2005 crash in Chicago that killed a 6 year-old boy because they did not properly halt the plane before it skidded off a slick runway, The Washington Post reported on Oct. 3.

The report quoted the National Transportation Safety Board as saying that Southwest contributed to the crash by not properly training pilots in how to handle such situations.

The crash, the first in Southwest's 36 years, occurred at Chicago's Midway International Airport during a snowstorm on Dec. 8, 2005.

After touching down, the pilots neglected to turn on the plane's thrust reverses, devices that redirect thrust to help slow down the aircraft, for 15 seconds.

Investigators said that mistake made it impossible for the jet to stop before crashing through a fence and into traffic. Joshua Woods, a 6 year-old Indiana boy, was killed when the plane struck a passing car in which he was riding.