"An Israeli Air Force Sikorsky CH-53 Sea Stallion helicopter similar to the one that crashed in the accident"@en . "IAF CH-53.jpg"@en . . . "0"^^ . . "On May 10, 1977, an Israeli Air Force Sikorsky CH-53 Yas'ur helicopter crashed during an exercise in the Jordan Valley, killing all 54 on board (including the 10-member flight crew). The disaster became known as Ason Hanun-dalet, or \"Disaster of the 54\"."@en . "On May 10, 1977, an Israeli Air Force Sikorsky CH-53 Yas'ur helicopter crashed during an exercise in the Jordan Valley, killing all 54 on board (including the 10-member flight crew). The disaster became known as Ason Hanun-dalet, or \"Disaster of the 54\"."@en . . . . . . "1977 Israeli Air Force Sikorsky CH-53 Sea Stallion crash"@en . . "1977-05-10"^^ . "Accident"@en . "Under investigation"@en . . . . "1977"^^ . . "54"^^ . . .