Boeing 707 ushering in the Jet Age. It established Boeing as one of the largest manufacturers of passenger aircraft, and led to the later series of airliners with "7x7" designations. The later 720, 727, 737, and 757 share elements of the 707's fuselage design. The 707 was developed from the Boeing 367-80, a prototype jet first flown in 1954. A larger fuselage cross-section and other modifications resulted in the initial-production 707-120, powered by Pratt & Whitney JT3C turbojet engines, which first flew on December 20, 1957. Pan American World Airways began regular 707 service on October 26, 1958. Later derivatives included the
El Al El Al's success continued into the late 1960s. In 1968, regular flights to Bucharest were inaugurated, and cargo flights began to Europe and the United States. The airline also established a catering subsidiary, Teshet Tourism and Aviation Services Ltd. All these ventures brought in a profit of $2 million that year. In 1968, El Al experienced the first of many acts of terrorism that have been perpetrated against the airline. On 23 July, the only successful hijacking of an El Al aircraft took place, when a Boeing 707 carrying 10 crew and 38 passengers was taken over by three members