August 1, 2025, ©. Leeham News: Four years ago I did a series about aircraft development together with Henry Tam and Andrew Telesca. Both worked on the Mitsubishi Spacejet program. You can find the series here.
It was about the arduous task of developing and producing a certified aircraft for the FAA Part 23 standard and its EASA equivalent. The idea was to better describe what’s ahead for the many upstarts that wanted to develop 9-seat and 19-seat alternative propulsion aircraft.
Now we do a series about recent ideas on how the long development times for large airliners can be shortened. New projects talk about cutting development calendar time by one-third or more. Is this realistic?
Posted on August 1, 2025 by Bjorn Fehrm
By Bjorn Fehrm
July 31, 2025, © Leeham News: Airbus CEO Guillame Faury and CFO Thomas Toepfer presented the Airbus first half 2025 results yesterday. The Airbus performance is very much to plan, except there are 60 A320/A321 gliders standing on the aprons, missing engines.
“The lion’s share of these engines are CFM LEAPs, but Pratt & Whitney GTFs are also missing,” said Faury. “Our plan, supported by the engine OEMs, is to be at zero gliders by year-end”.
Except for delivering 60 A320/A321 less than planned, Airbus is executing to plan. “We are on plan with A320/A321 production. Finished airframes are standing waiting for engines,” continued Faury. “Overall, our divisions are on track with their actions and deliveries during the first half of 2025. Our guidance for 2025 is unchanged”.
Posted on July 31, 2025 by Bjorn Fehrm
By Scott Hamilton and Bjorn Fehrm
July 31, 2025, © Leeham News: We wrap up our five-part series today on What’s the Next New Airplane in the coming decades. We now look at Airplanes 9-13 in Figure 1 below.
These are the (9) COMAC 929, (10) Eco-version of New Light Twin, (11) CFM Open Fan single aisle, (12) the Boeing 787 re-engine, and (13) the Airbus A350 re-engine.
Posted on July 31, 2025 by Bjorn Fehrm
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Part 1 of 5
By Scott Hamilton
July 17, 2025, © Leeham News: Some urge Boeing to take the plunge “now” to launch a new airplane program.
Institutional knowledge is slipping away, these people say. Boeing hasn’t launched a new airplane since December 2003 (the 787), they note. The 737 MAX is selling at a poor second to the Airbus A320neo family. Boeing continues to lose market share.

This illustrates the variety of aircraft being discussed for the next decade or more. Boeing already decided to nix the Transonic Truss Brace Wing aircraft (#2). Credit: Leeham News.
On the other hand, Airbus is in no hurry to launch a new airplane program—or so it says. It can’t keep up with current demand.
Beginning today, LNA will take a five-part look at what the potential new airplanes and/or airplane technologies are for the coming decade or more. Having recently attended the Paris Air Show, we have the latest to supplement our years of study in this arena.
We look at 13 airplanes and concepts (we don’t examine eVTOLs and pure-battery-powered aircraft). These are numbered for identification—not for any ranking of likelihood of proceeding to a real program.
Today’s Part 1 identifies and describes the 13 aircraft.
Posted on July 17, 2025 by Scott Hamilton

The future of the CFM RISE Open Fan on the Airbus A320neo successor family loses its biggest proponent within Airbus with the retirement of Commercial Aircraft CEO Christian Scherer. His successor is CEO of MTU Aero Engines, a big supplier to CFM’s rival, Pratt & Whitney and the PW1100 GTF engine. Credit: Leeham Co.
By Scott Hamilton
July 10, 2025, © Leeham News: It’s official: Lars Wagner becomes CEO of Airbus Commercial Aircraft on Jan. 1. He will succeed current CEO Christian Scherer, who will retire after 40 years at Airbus.
Word of Wagner’s appointment leaked months ago.
Wagner joins Airbus on Nov. 1 to begin a two-month transition. He is currently the CEO of MTU Aero Engines, a position he assumed in 2023. He joined MTU in 2015. Before that, he held various positions at Airbus. He is an engineer.
Wagner’s appointment may cast a question over GE Aerospace’s campaign with Airbus to choose the RISE Open Fan engine for the latter’s new single aisle aircraft intended to replace the A320neo family.
During the Paris Air Show last month, Airbus Group CEO Guillaume Faury said Airbus plans to decide on the engine to be selected for the A3XX around 2027-2028. A program launch target is 2030 with an entry-into-service target of 2038.
Posted on July 10, 2025 by Scott Hamilton
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By Scott Hamilton
July 7, 2025, © Leeham News: US Transportation Secretary Sean Duffy wants to return to aerospace’s zero-tariff agreement, dating to 1979, but cautioned that doing so requires a larger trade agreement between party governments.
Currently, the US has a minimum 10% to 25% tariff on aerospace imports from the European Union and Canada, with much higher fees in some cases. The EU is prepared to impose reciprocal tariffs on the US.
Tariffs have major implications for Airbus and Boeing. Although Airbus assembles A220s and A320/321s at its US Mobile (AL) plant, fuselages, wings and other components are imported into the US from Canada (A220s) and the EU (A320/321s).
Boeing exports planes to the EU, which includes 28 countries. Boeing has more exposure than Airbus.
Components imported by Airbus or Boeing for inclusion in the airplanes are also subject to tariffs.
A Boeing spokesperson told LNA that it can recapture tariffs on important components that are on aircraft subsequently exported. But this ignores the overarching tariffs the EU may apply to the completed airplane.
In advance of the Paris Air Show, Airbus said that it’s going to adjust to US-imposed tariffs.
Responding to a question if it “made sense” for the Mobile plant to assemble A220s and A320/321s at the present rate given the impact of the tax, Christian Scherer said there will be no change. Airbus will live with the situation as it evolves. Scherer is the CEO of Airbus’s commercial operations.
Posted on July 7, 2025 by Scott Hamilton
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By Bjorn Fehrm
July 3, 2025, © Leeham News: We are writing an article series about stretching the A220 to a capacity in the A320neo range. The idea is to replace the A320neo over time, making room in the A320/321 production lines for more A321s and extending the A220 family with a larger variant.
We can increase the capacity to that of the A320neo by stretching the A220 fuselage. The next discussion was about how much we could increase the Maximum Takeoff Weight (MTOW) to accommodate more passengers and additional fuel, thereby maintaining the A220-300 range with a longer, heavier, and, therefore, draggier aircraft. We would need to find wing lift improvements and more thrust to keep the field performance close to the A220-300.
We now utilize the Leeham Aircraft Performance and Cost Model (APCM) to evaluate various changes to an A220-500 to optimize its performance. 
Figure 1. A rendering of an A220-500. Source: Leeham Co.
Posted on July 3, 2025 by Bjorn Fehrm
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By Scott Hamilton
June 23, 2025, © Leeham News, Paris: CFM International touts its Open Fan RISE engine as the wave of the future. (CFM is a 50-50 joint venture between GE Aerospace and Safran.)
Rival Pratt & Whitney says evolution of its Geared Turbo Fan is the best engine choice going forward.
Neither company will admit that it is also researching and developing a Plan B engine. For CFM, this is a conventional turbofan. For PW, this is a new Open Fan. But during the Paris Air Show, LNA confirmed that both have a Plan B engine in development.
PW has gone out of its way to dismiss the very idea of an Open Fan engine. Rick Deurloo, the president of Pratt & Whitney Commercial, won’t even talk about the “competitor.” Deurloo makes it clear—publicly, at least—that an evolution of PW’s Geared Turbo Fan (GTF) is the best solution for the next generation engine for the single aisle market, in its view.
Mike Winter, RTX’s Chief Engineer, dismissed the Open Fan as “sub-optimal” on a successor to the Airbus A320neo and Boeing 737 MAX families. It involves too many installation compromises on this size aircraft, he says. RTX is the parent of PW.
But, says one person with direct knowledge, PW fully understands that if CFM is successful in solving all the challenges of an Open Fan and meets the publicly stated goal of improving fuel consumption by 20% compared with today’s GTF and CFM LEAP engines, PW’s gain of an evolutionary GTF won’t be competitive.
So, says the person with direct knowledge of PW’s activities, the development of an Open Fan alternative engine is being worked on as PW’s Plan B.
Furthermore, PW’s sister company, Pratt & Whitney Canada, publicly disclosed its development of an Open Fan engine in a briefing on Tuesday this week. This engine is for a new 70-100-seat aircraft designed by the start-up company MAEVE. PW is following PWC’s development.
Posted on June 23, 2025 by Scott Hamilton
By Bjorn Fehrm
June 19, 2025, © Leeham News at Paris Air Show: Boeing chose to scale down its participation at this week’s Paris Air Show out of respect for the victims of the Air India crash last week. This left Airbus and Embraer to announce new orders, with a total of 142 firm orders for Airbus and 60 for Embraer.
Outside the order activity for the three large airliner OEMs, it was a relatively quiet show, with few noteworthy announcements of advancements in areas such as Sustainable Aviation.
Posted on June 19, 2025 by Bjorn Fehrm
By Scott Hamilton
June 14, 2025, © Leeham News: Airbus and Boeing forecast a significant production gap during the next 20 years of more than 2,000 aircraft per year in their current outlooks released in conjunction with the Paris Air Show. The event begins Monday.
Neither company can fill this gap given their current production rates and the goals they have for the rest of this decade.
This means other manufacturers must step up. The question is who?
China’s Comac is current producing a competitor to the Airbus A320neo and Boeing 737 MAX, the C919. But the production rate is excruciatingly low.
Comac also has plans for a widebody airplane to compete with the Airbus A330-900 and Boeing 787. If past is prologue, development of this aircraft will be much longer than the target entry into service of 2029.
Embraer currently is the world’s third largest airliner manufacturer. However, its jets seat between 76- and 144 seat. The company is studying whether to enter the mainline jet sector, but the decision seems a year or more away.
Start-up JetZero wants to develop a Blended Wing Body aircraft for the 250-300 seat sector. But it has little money, no engine and, LNA believes, little hope of meeting the ambitious timeline of having a demonstrator aircraft by 2027.
In a media briefing on June 13, Airbus named Boeing as its medium-term competitor; China is most like to become one; Embraer is a question mark; and JetZero appears to be making little progress, in its view.
Posted on June 14, 2025 by Scott Hamilton