Boeing 747 SR

In response to requests from Japanese airlines for large capacity aircraft to serve domestic routes between major cities, Boeing developed the 747SR as a short-range variant of the 747-100, with fuel capacity and increased capacity payload. In economy class seats increased to 498 passengers could be transported in early versions and more than 550 in later models. [71] The 747SR was a design objective economic life of 52,000 flights during 20 years of airline operations, compared with 24,600 flights in 20 years of rule 747. [105] The initial model 747SR, 100SR-on, had a reinforced body structure and chassis to accommodate the additional load accumulated a greater number of takeoffs and landings. [106] Additional structural support was included in the wings, fuselage and landing gear, along with a 20 percent reduction in fuel capacity. [107]
One of the two 747-SUD 100BSR models built for Japan Airlines
The initial order for-100SR, four planes of Japan Air Lines (JAL Japan Airlines after), was announced on October 30, 1972; launch took place on August 3, 1973, and the first flight took place on 31 August 1973. The type was certified by the FAA on September 26, 1973, with the first delivery the same day. The-100SR entered service with JAL, the only client type, October 7, 1973, and usually operate Japanese domestic flights. [35] Seven 100SRs were built between 1973 and 1975, each with 520,000 pounds (240,000 kg) maximum takeoff weight and Pratt & Whitney JT9D-7A engines declassification of 43,000 pounds of force (190,000 N) of thrust. [108]
After-100SR, Boeing produced the 100BSR-747SR a variant with increased takeoff weight capability. Debuting in 1978, also incorporated 100BSR-structural changes in a relationship of hours of high-flying cycle, a standard related to the model 100B-debuted in 1979. The 100BSR, first flew on November 3, 1978, with the first delivery to All Nippon Airways (ANA), the December 21, 1978. A total of 20 occurred 100BSRs ANA and JAL. [109] The 100BSR-had a maximum takeoff weight of 600,000 pounds and was powered by the same JT9D-7A engines used in the-100SR. ANA operated domestic routes type 455 or 456 Japanese seat until he retired from his last flight on March 10, 2006. [110]
In 1986, two LDS 100BSR models, offering the stretched upper deck (SUD) of -300, were produced for JAL. [111] The type of flight occurred on February 26, 1986, with FAA certification and first delivery on March 24, 1986. [112] JAL operated the SUD-100BSR with 563 seats on domestic routes until his retirement in the third quarter of 2006. While only two 100BSR TCS occurred, in theory, standard 100Bs can be modified to SUD certification. [109] is generally constructed 747SRs 29 [2], including seven-100SR, 20 100BSR, and two models 100BSR-SUD.

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