Flight demand in the world's most populous country and second-largest economy is increasing and diversifying, Boeing said in its new Current Market Outlook for the country.
Chinese new aircraft demand will reach 6,020 planes worth USD 870 billion during the 2014-2033 period, it said, compared to last year's 20-year demand forecast of 5,580 planes.
Underscoring the dramatic increase in passenger demand, Boeing said that a total of 6,930 passenger aircraft will be plying China's skies in 2033, three times the current 2,310.
During the 20-year period Chinese carriers will take delivery of 16 percent of the world's air plane production, the company said.
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Boeing, maker of the 737 MAX and 787 Dreamliner, competes with Europe's Airbus for global dominance in the aircraft market.
The US firm says it made more than half the current Chinese commercial fleet, while Airbus says it has an almost-50 percent share.
"The market is changing, evolving," Tinseth told reporters in Beijing, saying demand for more direct flights to more destinations was being driven by factors including low-cost carriers.
Only 1,400 of China's new aircraft in the next 20 years will replace existing airplanes, Boeing said, while 4,620, or 77 percent, will be additions to the fleet.
In July, Boeing raised its forecast for global aircraft demand by 4.2 percent from last year's projection, saying it expected 36,770 planes to be delivered over the next two decades in deals worth USD 5.2 trillion.