The aviation accident that Jacob Veldhuyzen van Zanten was involved in killed how many people?
Jacob Veldhuyzen van Zanten:  He was the captain of the KLM Royal Dutch Airlines Boeing 747 which was involved in the Tenerife airport disaster, the deadliest accident in aviation history. Tenerife airport disaster: On March 27, 1977, two Boeing 747 passenger jets, KLM Flight 4805 and Pan Am Flight 1736, collided on the runway at Los Rodeos Airport (now Tenerife North Airport), on the Spanish island of Tenerife, Canary Islands, killing 583 people in the deadliest accident in aviation history.
583