On Sunday, March 27, 1977 KLM Flight 4805 and PANAM Flight 1736 both approached Las Palmas Airport in the Canary Islands, when a terrorist's bomb exploded on the airport. Both flights were diverted to the neighboring island of Tenerife. After Las Palmas Airport reopened first KLM Flight 4805 was cleared for takeoff, a few minutes later PANAM 1736 was cleared. Due to a number of misunderstandings both aircraft collided on the runway of Tenerife Airport during takeoff, killing 583 people.