Question: has a jumbo jet ever crashed?
Answer: On March 27, 1977, the deadliest aviation accident in history occurred when KLM Flight 4805 collided on the runway with Pan Am 1736 in heavy fog at Tenerife Airport, resulting in 583 fatalities. ... There were 61 survivors, all from the Pan Am 747. The Pan Am aircraft was the first 747 that entered commercial service.