On the 5th, it was learned that China Eastern Airlines continues to expand the operation scale of domestically produced large aircraft, and it is expected that the fleet size of China Eastern Airlines C919 will reach 10 by 2024. With more deliveries of the C919, domestically produced large aircraft are shifting from initial operations to large-scale operations. According to data from China Eastern Airlines, the C919 fleet has flown over 1900 hours and carried over 80000 passengers. Since its commercial operation in May 2023, as of the end of 2023, China Eastern Airlines has flown a total of 1956.16 hours and carried a total of 81668 passengers. At present, four C919 aircraft in China Eastern Airlines' fleet have been put into commercial operation. On March 2, 2024, the first batch of five orders were all delivered and listed. Previously, China Eastern Airlines had signed a purchase agreement with COMAC to add 100 C919 aircraft. It is reported that other domestic airlines will also start accepting the domestically produced large aircraft C919 in 2024. Having made multiple appearances overseas and met with the public in Singapore and Laos, the 2024 National Civil Aviation Work Conference proposed to promote the export of domestically produced large aircraft C919. In 2024, civil aviation will carry out post certification management for C919 and ARJ21, optimize airworthiness review for C919 and ARJ21 modifications, and enhance the promotion of EASA certification review for C919 aircraft. In February 2024, China Eastern Airlines launched the world's first C919 aircraft, which took nearly 6 hours and approximately 4200 kilometers of direct flight, and successfully arrived at Changi International Airport in Singapore to participate in the 2024 Singapore Air Show. During the air show, five domestically produced aircraft produced by COMAC, including the China Eastern Airlines C919, were unveiled to the public in groups overseas. In March 2024, China produced large passenger aircraft C919 and regional aircraft ARJ21 flew from Vietnam to Laos and landed at the Wadai International Airport in Vientiane, the capital of Laos. Two models are being showcased for the first time in Laos. Promoting the continuous optimization and improvement of performance design for domestically produced large aircraft. Currently, domestically produced large aircraft are shifting from initial operation to large-scale operation. What are the next steps? "Good aircraft are both built and flown." In the view of Li Yangmin, General Manager and Deputy Secretary of the Party Group of China Eastern Airlines, compared to mature similar models internationally, domestically produced large aircraft are still in the early stage of large-scale commercial operation. To achieve market and commercial operation success, it is necessary to continuously explore the scale operation mode of domestically produced large aircraft and continuously enhance core competitiveness. With the expansion of C919 delivery scale, Li Yangmin suggests further building an operational coordination mechanism, elevating the coordination mechanism from the enterprise level to the industry level, led by industry regulatory departments, further enhancing the level of operational negotiation mechanism, expanding participation scope, in order to facilitate better sharing of operational experience among all parties, solve relevant problems in the large-scale commercial operation of domestic large aircraft with higher efficiency and lower cost, and promote continuous optimization and improvement of performance design of domestic large aircraft. He also pointed out that the large-scale operation of C919 aircraft requires close coordination and cooperation between the upstream and downstream of the industrial chain, and suggested further improving the operational support system