The first C919 will mainly test the flying conditions, the onboard equipment and the landing gear, while the second or No.102 jet will be tested mainly on the engine and fuel systems, said Mao Wei, director with the test flying engineering department with the Commercial Aircraft Corporation of China (COMAC), the developer of C919.
The narrow-body C919 jet - white with green and blue stripes - disappeared into the clouds after taking off from Pudong International Airport in the commercial hub Shanghai as a crowd of thousands cheered.
Up till now, 23 airlines and financial companies, mostly from China, have ordered 570 C919 planes from COMAC.
Following the maiden flight of C919, China's first home-built passenger jet, in Shanghai on Friday, the nation is en route to become a major player in the global aviation market.
It has a range of 5,555 kilometres (3,444 miles) and has received 570 orders, nearly all from domestic airlines.
Previously, Comac had said that 21 customers had placed orders for more than 500 planes by the end of 2016 and that it expected sales to exceed 2,000 in the near future.
In addition, the Federal Aviation Administration (FAA) has also not given airworthiness certification, "thus limiting the plane's access to overseas markets", Levine said.
China's first indigenous passenger jet made its maiden flight on Friday, Reuters reported.
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"We are very confident that the C919 will play a more important role in the world aviation industry", said Olivier Dubroeucq, Safran executive vice president of the COMAC and AVIC Programs.
With a population of 1.4 billion, the trips add up: Analysts predict that China will surpass the U.S.as the world's largest commercial aviation market by 2030. But even Comac workers conceded in conversations with Fortune that their first plane, the C919, wouldn't do that.
The C919's maiden flight was watched by people around the globe, including at least 2 million on Chinese microblogging platform Weibo.
Airbus delivered 153 aircraft to Chinese operators previous year, including 141 from the A320 family, Eric Chen, president of Airbus Commercial Aircraft China, said in an emailed statement.
Both Airbus and Boeing have assembly plants in China considering the growing demand for new aircraft. In the 1970s it developed the Shanghai Y-10 airliner, but the plane was beset by problems, including its heavy weight, high fuel consumption, limited range and safety concerns.
"If achieved, I think it will greatly enhance the accessible market of C919", he said. "For Honeywell, which has invested heavily in China's aviation industry, we are picking the victor", said Steven Lien, president of Honeywell Aerospace Asia Pacific.
"The large aircraft market can definitely accommodate C919 to form a A+B+c market structure", Gao told NBC News, noting that the small letter "c" represents the Chinese jet in a market that will continue to be dominated by Airbus and Boeing.