Latest reports suggest that European regulators have wrapped up a months-long testing process for the China-made C919 passenger jet without finding any major problems in the hardware. The jet, which has already been in service domestically for over three years, may still need software tweaks based on collected data from these flight tests and other work before it is certified. The completion of in-flight testing is the third hurdle cleared by the Chinese airplane in a four-step certification process by the European Union Aviation Safety Agency. Florian Guillermet, the executive director of the agency, told the media last year that the jet is expected to get European certification within three to six years.

These reports come at a critical time for Western plane makers like The Boeing Company (NYSE:BA) and Airbus. Boeing stock is down over 16% in the past six months as the company grapples with manufacturing and quality control issues, delayed certification for flagship programs, and a heavily leveraged balance sheet. Meanwhile, Airbus is constrained by problems with external suppliers as it ramps up production. The two firms hold a combined backlog of over 15,000 aircraft, representing a decade of sold-out production. COMAC, the state-run Chinese corporation that makes the C919, has signed deals with China Eastern Airlines and Air China for orders worth 100 planes each slated for delivery by 2030.

Compared to the heavy weights in commercial aviation, the Chinese disruptors seem rather small in scale. However, investors should carefully consider the impact that a new entrant will have on an aerospace market that is characterized by delivery delays and high costs of maintenance, repair, and overhaul services. The Boeing Company (NYSE:BA) and Airbus have both sold more planes than they can currently build. As such, the competitive battleground in the sector has shifted from the sales office to the factory floor. Passenger travel hit a new record in 2025, according to a report on the aviation sector by professional services firm PwC, pushing commercial OEMs to target double-digit delivery increases in 2026.

The Fissures Within the Duopoly

The Boeing Company (NYSE:BA), once the gold standard of engineering, has suffered one of the most severe corporate and reputation crises in modern industrial history over the past few years. Following crashes of the Boeing 737 MAX 8 in 2018 and 2019, which resulted in the deaths of 346 people, the federal authorities revoked the authority of the firm to approve individual MAX planes in 2019. Production quality issues with the Boeing 787 airplanes in 2022 resulted in a similar action. Investigations revealed the 737 crashes were triggered by the Maneuvering Characteristics Augmentation System, software designed to prevent stalls, which erroneously forced the nose of the planes down based on data from a single faulty sensor.

Since then, the FAA has had strict oversight over The Boeing Company (NYSE:BA) manufacturing and certification processes. Investors have been concerned whether the company can fix the manufacturing and quality culture in time to compete with Airbus and the Chinese disruptors. Another investor worry is the delayed certification of flagship programs like the widebody 777X, as well as the smaller 737 MAX 7 and MAX 10 variants. These delays have allowed Airbus to gain a multi-year advantage over Boeing. For the latter to close this gap, flawless execution is required to repair brand image. This might prove even more difficult as Chinese firms enter the market, stealing Boeing orders to airlines in smaller countries.

The Boeing Company (NYSE:BA) is too big to fail though. Earlier this week, the FAA said it would allow Boeing to issue airworthiness certificates for all 737 MAX and 787 airplanes starting next week. This marks a major milestone as the company ramps up production. The FAA last year raised the monthly production cap for the firm to 42 aircraft, ending a 38-plane limit imposed in January 2024. Boeing aims to increase this limit to 47 aircraft a month and seek further increases in the coming months. As delivery cadences normalize, the company will experience a massive free cash flow inflection. With orders remaining strong, operational normalization alone will drive significant stock upside.

For Airbus, The Boeing Company (NYSE:BA) problems have highlighted the strong execution and market share dominance of the firm. The European company controls over 60% of the lucrative narrowbody market backlog. It holds a stronger balance sheet, a clean safety track record, and a superior product mix in the high-margin A321neo/A321XLR segment. The firm aims to ramp narrowbody A320-family output up toward 75 planes per month by 2027. However, bears argue that Airbus is constrained by external suppliers for engines and structural panels. If engine delays or aerostructure issues worsen, the company will miss target delivery numbers, squeezing margins on an already premium-valued stock.

Issues with Pratt & Whitney Geared Turbofan engines deployed by Airbus have caused delivery delays and grounded portions of the global A320neo fleet already. Additionally, absorbing component production following the carve-out of Spirit AeroSystems also poses near-term risk for the company. With the entry into service of the long-range A321XLR, Airbus is opening new point-to-point thin long-haul routes. The key question for investors is whether airlines can operate these single-aisle transatlantic routes reliably at scale without strain on passenger comfort or turn times. To answer these questions, investors would be better served comparing the fundamentals defining the Airbus and The Boeing Company (NYSE:BA) businesses.

Financial Metrics: Airbus Versus Boeing

Revenue is one of the most fundamental indicators of company performance. Airbus reported full-year 2025 revenue of €73.4 billion, representing a 6% increase over the previous year, reflecting higher commercial aircraft deliveries and growth in the defense and helicopter businesses. The Boeing Company (NYSE:BA) generated full-year 2025 revenue of $89.5 billion, a 34% increase from 2024 as commercial aircraft deliveries recovered significantly. Airbus achieved reported EBIT of €6.1 billion and adjusted EBIT of €7.1 billion in 2025. The net income reached €5.2 billion. Boeing, in contrast, returned to profitability in 2025 with operating income of $4.3 billion and net income of $2.2 billion after substantial losses in previous years.

Operating margins provide additional insight into operational efficiency. Airbus generated an adjusted operating margin close to 10%, while The Boeing Company (NYSE:BA) reported an overall operating margin of approximately 4.8% in 2025, which represented a significant improvement from the large negative margins recorded in 2024 but still remained well below Airbus. Cash flow is another area where Airbus has consistently outperformed Boeing. Airbus generated free cash flow of approximately €4.8 billion in 2025, as Boeing produced positive operating cash flow of about $1.1 billion during 2025, marking an important milestone after years of cash burn, but the free cash flow for the firm remained slightly negative for the full year.

Balance sheet strength also favors Airbus. At the end of 2025, Airbus held a net cash position exceeding €12 billion, providing financial flexibility for future investment. The Boeing Company (NYSE:BA), although maintaining cash and marketable securities of approximately $29.4 billion, continued to carry more than $54 billion in debt following years of borrowing to finance losses and production disruptions. Boeing finished 2025 with a record backlog valued at $682 billion, representing more than 6,100 commercial aircraft. Airbus ended the year with an order book valued at €619 billion and continued to receive strong new orders despite already operating near production capacity.

Shareholder returns further distinguish the two companies. Airbus has resumed regular dividend growth, increasing its dividend to €3.20 per share for 2025. Boeing has not reinstated dividends or share repurchases. The numbers clearly favor Airbus. However, if The Boeing Company (NYSE:BA) successfully increases aircraft production, resolves certification issues, and continues generating positive cash flow, the financial gap with the European firm could narrow over the next several years. For investors, based on current financial metrics, Airbus remains the stronger company in terms of profitability, liquidity, operational efficiency, balance sheet quality, and overall financial resilience.

Who Has More to Lose as Chinese Enter Commercial Aviation?

As Chinese companies gear up to enter international aviation markets, Boeing is likely to face greater financial risk in the short to medium term because it has historically depended heavily on sales to Chinese airlines. Outside China, the competitive landscape would also change if Chinese aircraft obtained international certification. Airlines in emerging markets across Asia, Africa, Latin America, and the Middle East are highly sensitive to acquisition costs and financing terms. Chinese manufacturers are expected to offer aircraft at prices significantly below comparable The Boeing Company (NYSE:BA) and Airbus models while also benefiting from government support and state-backed financing packages.

As a result, some airlines that previously purchased Boeing 737 or Airbus A320 family aircraft could shift toward Chinese alternatives. This would intensify price competition, forcing Boeing and Airbus to offer greater discounts. Since The Boeing Company (NYSE:BA) margins are already lower than Airbus, aggressive price competition would likely have a more severe financial impact on Boeing. The competitive threat from China is significant in the narrow-body aircraft segment. Aircraft such as the Boeing 737 MAX and Airbus A320neo families account for the majority of deliveries and generate substantial cash flow through production volume, aftermarket services, and long-term maintenance contracts.

The COMAC C919 directly competes within this market segment. Even if the aircraft initially captures only a modest share of international demand, every percentage point of market share gained by COMAC represents thousands of aircraft over the coming decades, potentially reducing future order backlogs for both The Boeing Company (NYSE:BA) and Airbus. Because Boeing currently has fewer successful commercial aircraft programs than Airbus, it has less diversification within commercial aviation and is therefore more exposed to competitive losses in the narrow-body market. Overall, Boeing faces the greater strategic and financial risk from the international emergence of Chinese aircraft manufacturers.

GE Aerospace (NYSE: GE) and Honeywell Aerospace (HONA) are also among the US-based companies that will be negatively affected. GE Auerospace co-produces the CFM LEAP-1B engines. These are the exclusive propulsion systems for the high-volume Boeing 737 MAX. Fewer plane sales immediately trigger lower factory delivery volumes for GE. Honeywell Aerospace (NASDAQ: HON) is also highly vulnerable as a major tier-1 supplier of integrated avionics, mechanical auxiliary power units (APUs), and braking systems built directly into the 737 and 787 fleets.

Hedge Funds Are Not Buying The China Hype Yet

Although Chinese manufacturers such as COMAC represent the most significant long-term competitive challenge to The Boeing Company (NYSE:BA) and Airbus, current institutional investor behaviour does not indicate expectations of an imminent disruption to the global duopoly. Even activist shareholders managing billions of dollars continue to focus their engagement on capital allocation, profitability, and operational execution rather than treating Chinese entrants as an immediate existential threat. The prime example is TCI Fund Management, an activist hedge fund that owns over 3% of Airbus. The fund has publicly criticized the proposed investment of Airbus in the Evidian business.

Meanwhile, hedge funds continue to heed market chatter in The Boeing Company (NYSE:BA) versus Airbus debate. According to an exclusive hedge fund database maintained by Insider Monkey, 99 elite funds held a stake in Boeing at the end of the first quarter of 2026, down from 114 in the fourth quarter of 2025. Pentwater Capital Management was the largest shareholder in the American firm with a stake worth over $1.4 billion. Four elite funds from the top ten hedge fund shareholders in Boeing at the end of the first quarter of 2026 reduced their stake in the company, compared to filings for the previous quarter. Prominent investor D.E. Shaw has PUT options on the stock worth more than $304 million.

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