Not a hijacking, but also maybe a reason not to give all Sikhs a pass on airport security.

> The bombing of Air India Flight 182 is the worst terrorist attack in Canadian history and was the world's deadliest act of aviation terrorism until the September 11 attacks in 2001. It remains the deadliest aviation incident in the history of Air India, and the deadliest no-survivor hull loss of a single Boeing 747

https://en.wikipedia.org/wiki/Air_India_Flight_182