Which CSI season 1 episode is noted as based on Southwest Airlines Flight 1763?

The CSI season-one episode noted as based on Southwest Airlines Flight 1763 was “Unfriendly Skies.”

In the episode, the team investigates the death of a first-class passenger aboard an airliner. Several passengers restrained the victim after believing he posed a threat, creating a mystery about whether the death was an accident, self-defense or a coordinated killing. Grissom reconstructs the incident from physical evidence and conflicting witness accounts.

The plot closely parallels the real August 11, 2000, incident on Southwest Airlines Flight 1763. Nineteen-year-old Jonathan Burton became agitated during the flight from Las Vegas to Salt Lake City and was subdued by fellow passengers. He died from asphyxiation during the struggle. No criminal charges were filed against the passengers who restrained him.

“Unfriendly Skies” aired on December 8, 2000, only about four months after the real incident. The episode is commonly described as paralleling or being inspired by the case, although that wording is safer than claiming the producers made a formal statement that it was directly adapted from it. It was the ninth broadcast episode of season one.