On March 27, 1977, two Boeing 747s collided on the runway at Los Rodeos Airport in Tenerife, Canary Islands, killing 583 people in the deadliest aviation accident in history. The disaster was the result of a misunderstanding between air traffic controllers and pilots in dense fog. A terrorist bombing incident had led to a diversion of flights to Tenerife, and the confusion contributed to the crash. The tragedy led to significant changes in aviation safety, particularly in the areas of communication and cockpit procedures. The Tenerife disaster remains a stark reminder of the importance of clear communication in aviation.