It was the deadliest plane crash of all time until the Tenerife disaster in 1977. It is currently the deadliest single-aircraft crash with no survivors. 329: On June 23, 1985, Air India Flight 182 , a Boeing 747-237B en route from Toronto and Montreal to London and Delhi, crashed off the southwest coast of Ireland when a bomb exploded in the cargo hold.
https://en.wikipedia.org/wiki/Aviation_accidents_and_incidents
