For the better part of six decades, the global commercial aviation market has been a two-company duopoly. Boeing and Airbus together supply virtually every large commercial airliner flying today, carving up an industry worth over $150 billion annually in new aircraft orders alone. That duopoly now faces its most serious structural challenge — not from a startup or another Western manufacturer, but from a Chinese state-backed enterprise called COMAC: the Commercial Aircraft Corporation of China.
COMAC is not trying to compete on a single aircraft. It is trying to build an entire domestic aviation ecosystem — covering design, manufacturing, certification, engine development, maintenance, pilot training, and parts supply — from essentially scratch. Understanding how far it has come, how far it still has to go, and what it means for global aviation supply chains is essential reading for any executive operating near the aerospace sector.
The Strategic Logic Behind COMAC
China operates the world’s second-largest commercial aviation market. In 2024, Chinese airlines flew more than 620 million passengers domestically, a figure projected to surpass 1.6 billion annually by 2042 according to Airbus’s own market forecast. Boeing’s 2024 Commercial Market Outlook estimates China will require over 8,800 new commercial aircraft over the next two decades — approximately 20 percent of global demand.
For decades, every one of those aircraft was either a Boeing or an Airbus. China was spending tens of billions of dollars per year in foreign exchange on aircraft purchases, with no domestic alternative. COMAC was established in 2008 through a restructuring of state aviation assets, consolidating Shanghai Aircraft Manufacturing Corporation, research institutes, and legacy AVIC commercial aviation units. Founding shareholders included SASAC, AVIC, Baosteel, Chalco, and the Shanghai municipal government. The company was capitalized at approximately 19 billion yuan and given a single mandate: build a world-class Chinese commercial airliner.
The ARJ21: Learning to Walk
COMAC’s first commercial aircraft, the ARJ21, entered service with Chengdu Airlines in June 2016 after a development process that began in 2002. The ARJ21 is a 78-to-97-seat regional jet powered by a CFM56-derived engine from General Electric — a deliberate choice to use proven Western powerplants while Chinese engineers developed domestic systems in parallel.
The ARJ21 received its type certificate from China’s Civil Aviation Administration (CAAC) in 2014, twelve years after development began. A typical new aircraft program at Boeing or Airbus takes seven to ten years. The delays reflected the genuine difficulty of building certification infrastructure and supply chain management from a relatively low base. By 2025, COMAC had delivered over 130 ARJ21s to Chinese carriers, and Indonesia’s TransNusa became the aircraft’s first international operator in 2022 — COMAC’s first export delivery.
The C919: China’s Narrowbody Challenge
The C919 is COMAC’s flagship program. A 158-to-192-seat single-aisle narrowbody, it competes directly with the Boeing 737 MAX and Airbus A320neo — the two aircraft that account for approximately 80 percent of all commercial aircraft deliveries worldwide.
COMAC launched the C919 in 2008. The aircraft made its maiden flight in May 2017, received CAAC type certification in September 2022, and entered commercial service with China Eastern Airlines on May 28, 2023. By mid-2026, approximately 25 C919s had been delivered, with China Eastern, Air China, and Hainan Airlines operating the type. The order book exceeds 1,200 aircraft from Chinese carriers, representing a domestic backlog worth roughly $120 billion at list prices. The production bottleneck is significant: COMAC produced six to eight aircraft per year in 2025, compared to Boeing’s 737 rate of roughly 30 per month and Airbus’s A320 family approaching 75 per month.
The LEAP-1C Engine: A Crucial Dependency
The C919 is powered by the CFM International LEAP-1C engine — a GE-Safran joint venture product, and the same engine family powering the 737 MAX and A320neo. COMAC’s reliance on a Western powerplant is both pragmatic and strategically vulnerable. China’s Aero Engine Corporation of China (AECC), established in 2016, is developing the CJ-1000A as a domestic replacement. Bench testing was completed in 2024, with certification testing expected in the late 2020s — though independent analysts consider that timeline ambitious. Until a domestic engine achieves airworthiness certification, the C919 remains dependent on Western supply chains for its most critical subsystem.
The Supply Chain: Western Components, Chinese Assembly
Both the ARJ21 and C919 rely heavily on Western subsystems. The C919’s avionics draw on Collins Aerospace and Honeywell. Its hydraulics involve Parker Hannifin. Landing gear comes from Liebherr. Flight control computers incorporate Western technology. This was intentional: certify a competitive aircraft quickly using proven components, then progressively indigenize subsystems in subsequent variants. China’s aerospace establishment describes this approach as “integration innovation” (集成创新) — pragmatic sourcing in the near term, domestic capability in the long term.
The US Commerce Department’s Entity List and export control framework have increasingly complicated these arrangements. US companies supplying COMAC now require export licenses for a range of components, adding compliance friction that did not exist five years ago. For Western aviation suppliers doing business in China, the message is clear: the regulatory environment governing dual-use aviation technology is tightening. Supplier relationships that were straightforward in 2019 now require dedicated compliance infrastructure.
The authoritative resource for this framework is the US Bureau of Industry and Security’s Export Administration Regulations. Any Western company supplying components to COMAC or to Chinese Tier-1 suppliers should treat BIS guidance as foundational compliance reading.
CAAC Certification and the International Recognition Gap
The C919 holds CAAC type certification, but for commercial operation outside China it requires FAA and EASA validation. Neither has begun formal type validation of the C919. The FAA and EASA maintain bilateral aviation safety agreements with approximately 85 countries; an aircraft certified only by CAAC cannot enter North American, European, Japanese, or Australian airline fleets without additional certification work estimated at several years minimum. For COMAC’s export ambitions, FAA and EASA recognition is a commercial prerequisite — and it remains substantially unresolved.
The CAAC has been modernizing its standards significantly, with published requirements now substantively aligned with FAA Part 25 in many areas. The CAAC’s official regulatory portal publishes ongoing airworthiness standards updates and certification guidance relevant to companies seeking to supply or partner with COMAC programs.
What This Means for the Global Aviation Industry
For Boeing and Airbus, COMAC represents a medium-term structural challenge rather than an immediate threat. China’s domestic airline market is being systematically channeled toward the C919 through procurement preferences at state-controlled carriers. China Eastern, Air China, and China Southern have all placed large C919 orders. Boeing’s 737 MAX order book in China dried up after 2019, and the aircraft was not re-certified for Chinese operations until January 2024 — years after most other major regulators. The delay was widely interpreted as partly political in nature.
For Western aviation suppliers, the strategic question is whether to engage the COMAC supply chain despite export control risk, or maintain distance. Honeywell, Collins Aerospace, and GE Aviation have all chosen engagement, viewing Chinese market access as a long-term strategic imperative. The broader industrial policy context matters here: China’s aviation ambitions are codified in its strategic manufacturing programs, which explicitly identify commercial aerospace as a priority sector for domestic capability development. Understanding how COMAC fits into China’s state enterprise ecosystem is essential — our analysis of AVIC, NORINCO, and CASIC’s defense-to-commercial pipeline provides critical institutional background.
The C919 story rhymes closely with China’s pattern in other industries — high-speed rail, solar panels, electric vehicles — where state-backed challengers moved from technical laggard to global competitor within a generation. Our deep dives on SMIC and the semiconductor push and on the role of state-owned enterprises in China’s economy explore parallel dynamics that apply directly to evaluating COMAC’s long-term trajectory.
COMAC is not yet competitive with Boeing or Airbus by any global metric. Its production rates are a fraction of its rivals, its engine remains Western, its international certification pathway is years away, and its widebody program faces serious headwinds. But it is flying commercially, it has a domestic order book that rivals anything Embraer or Bombardier have achieved, and it carries the full institutional weight of Chinese state industrial policy behind it. The global aviation industry would be unwise to underestimate what that combination can accomplish over a ten-to-twenty year horizon.