Date: March 27, 1977
Location: Tenerife, Canary Islands
Aircraft: Boeing B-747-121 / Boeing B-747-206B
Reg: N736PA/PH-BUF
Airline: Pan American World Airways / KLM
Flight No: 1736 / 4805
Fatalities: 644 : 583

The remains of a Pan Am B747 (top) and KLM B747 (bottom) in Tenerife, Canary Islands in the second worst aviation disaster in history, which killed a total of 583 people. The KLM 747 collided with a Pan Am 747 after the captain of the KLM plane started his takeoff roll without clearance.