Boeing 747-300: An improved version of the 747-200, design concept originated from the unsuccessful 747SP. Boeing found that a suitable upper deck structure would be conducive to stabilizing the airflow, reducing drag and thus fuel consumption. Based on this concept, the 747SUD (Stretched Upper Deck) project was officially launched on June 12, 180. Later, the model was renamed 747EUD (Extended Upper Deck). At the request of customers, some 747-100/-200 models were also modified to extend the upper deck. On October 5, 1982, the 747EUD made first flight and was officially named 747-300. The -300 model extended the upper passenger cabin by 7.11 meters the basis of the -200 model and added a cabin door. The number of passengers in the upper cabin increased from 32 to 69, upper cabin windows were also added. The straight staircase replaced the original spiral staircase. The maximum cruise speed increased from M0.84 to M0.85 It received the type certificate from the Federal Aviation Administration of the United States on March 7, 1983. It began to be delivered for use in 1983. Swiss Air was the first user. The 747-300 series was discontinued in 1990, with a of 83 produced.
Boeing 747-300: Standard all-passenger model.
Boeing 747-300: Designed for short-haul high-traffic domestic routes in Japan, with increased passenger capacity.
Boeing 747-300 Combi: A-cargo mixed version of the -300 model, which can be converted between all-passenger and passenger-cargo mixed configurations.
The Boeing 747300 was a transitional model between the -200 and -400, and was quickly replaced by the more advanced Boeing 747-00, which was developed in 1985. Although Boeing did not develop a full cargo version of the 747-300, it been able to modify it into a cargo aircraft according to airline requirements since 2000.
