Tenerife disaster

From Wikipedia, the free encyclopedia : http://en2.wikipedia.org/wiki/Tenerife_disaster

The Tenerife disaster took place on March 27, 1977, when two Boeing 747s collided on the island of Tenerife, killing 583. The Tenerife disaster had the greastest number of casualties of any air disaster until the September 11, 2001 Terrorist Attacks.
On March 27, 1977 Pan Am Flight 1736 had taken off from New York's JFK International Airport, bound for the Canary Islands. Upon approaching its final destination Las Palmas it was told the major airport was temporarily closed due to a bomb attack by Canary Island separatists, and was ordered to divert to the airport at the neighboring island of Tenerife, together with many other planes.The KLM Flight 4805, a 747 flying as a charter full with vacationers, was getting ready to head back to Amsterdam. KLM had instructions to depart first; the PanAm 747 would follow. Following the towers instructions, the KLM jet taxied to the end of the main runway and waited for takeoff clearance.

Utskrift fra voicerecorder
Det var da det hele gikk galt.En blanding av engelsk,spansk og hollandsk på radio fungerte veldig veldig dårlig.Dette sammen med teknisk og menneskelig svikt gjorde at ulykken ble så stor.
Ulykken førte til at språket for ALL kommunikasjon fly/bakke fly/fly ble engelsk