The ‘Nun-dalet’ Disaster (‘Disaster of the Fifty-four’): an IAF Yas’ur helicopter crashes in the course of a training exercise in the Judean Desert, some six kilometers north of Jericho. All 44 paratroopers and 10 air crew men on board are killed. Following an investigation by a commision of inquiry, new orders are issued limiting the number of soldiers that may be flown in a Yas’ur to 33, in addition to three air crew men.