Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- Bjorn’s Corner: Air Transport’s route to 2050. Part 27. June 20, 2025
- Pontifications: A Personal Note June 19, 2025
- Airbus books 142 firm orders as Boeing retracts from the Paris Air Show June 19, 2025
- AIN Media Group Agrees to Acquire Leeham News & Analysis June 17, 2025
- Five for Five: Air India crash points to systemic problems at Boeing that CEO Ortberg must fix June 15, 2025
Bjorn’s Corner: Airliner yaw stability
By Bjorn Fehrm
Feb. 22, 2019, ©. Leeham News: After discussing an airliner’s pitch stability we now turn to the yaw stability. A stable aircraft in yaw means we don’t want the aircraft to wag its tail sideways while flying.
The airliner shall fly straight ahead during take-off, climb, cruise, descent and landing, even when we have problems with an engine and must throttle it back or shut it down on one side.
Figure 1. The surfaces affecting yaw stability on an aircraft. Source: Leeham Co.
Airbus, Boeing pause on some production rate hikes
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Introduction
Feb. 21, 2019, © Leeham News: Airbus is boosting the A320 production to 60/mo this year and 63/mo next year.
But it’s put a pause on increasing the A350 rate from 10/mo to 13/mo.
Boeing was widely expected to follow its planned 737 rate hike of 57/mo, from this summer, to 63/mo next year to keep up with demand and with Airbus.
However, on the sidelines of the annual Pacific Northwest Aerospace Alliance conference last week, LNA learned that a 737 rate hike to 63/mo has been apparently put on a pause. Although Boeing has not made a decision to go to rate 63, the hike was expected in 2021, according to suppliers. This is now showing as 2022, they said.
Summary
- Airbus, Boeing backlog for single-aisle airplanes extends years.
- Both have ramped up production to meet demand, create delivery positions.
- Supply chain struggles to keep up.
- Twin-aisle demand waits for replacement surge.
Boeing supplier reaches deal with Machinists Union
By Bryan Corliss
February 19, 2019, © Leeham News: Machinists Union members who work at Cadence Aerospace-Giddens in Everett, WA, voted overwhelmingly to approve a new three-year contract with the company.
Ninety percent of those who voted Monday were in favor of the deal, according to the IAM’s District 751. (IAM 751 typically does not release vote totals in its contract elections, only the percentage voting in favor or against.)
IAM 751 President Jon Holden called the contract a “positive agreement.” The union’s negotiating committee called the deal “one members can be proud of and can continue to build upon into the future.”
A380 end opens opportunity for A350-2000
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Introduction
Feb. 18, 2019 © Leeham News: Airbus’ decision to end the A380 program clears the path, if chosen, for a plane that was studied three or four years ago: the stretch of the A350-1000 to the size of the 777-9.
Will the termination of the A380 open the way to stretch the A350-1000? Source: Airbus.
A 400+ passenger “A350-2000” would have encroached too closely on the A380’s 500+ passengers. Officials feared the A350-2000 would hurt the sales prospects of the A380.
With the A380’s last delivery now planned for 20xx, this becomes a moot point.
The prospect of a new, Rolls-Royce Ultra Fan engine for the A350 around 2025 will give the -2000 significantly superior economics to the 777-9 and a longer range, a preliminary analysis by LNA shows.
Summary
- An A350-2000 with RR Ultra Fan engines is superior to the 777-9.
- However, Boeing has a big head start with orders for 340 777Xs, most of which are for the -9.
- The market demand for a 400-450 seat airplane is increasingly iffy.
- But the A350-900/1000neo helps business case.
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Pontifications: Which airplanes are revolutionary or evolutionary?
By Scott Hamilton
Feb. 18, 2019, © Leeham News: Last week’s column about the revolutionary Boeing 747 prompted some Twitter interaction asking what other commercial airplanes might be considered “revolutionary.”
I have my views. Let’s ask readers.
There are also three polls below the jump in addition to the usual comment section. Polling is open for one week.
Bjorn’s Corner: Pitch stability, Part 10. Wrap up.
Feb. 15, 2019, ©. Leeham News: We now summarize the problems around an airliner’s pitch stability and why a good pitch stability is so important before we go to the next subject, yaw stability.
The pitch stability and how it works in different parts of the flight envelope is the trickiest of the aircraft’s stability problems around its three axes; Pitch, Yaw and Roll. Here is why.
Figure 1. A thought pitch moment curve for Boeing’s 737 MAX. Source: Leeham Co.
A380 launch aid in limbo at WTO, member states following program termination
Feb. 14, 2019, © Leeham News: Termination of the A380 program leaves unanswered Airbus’ obligation of outstanding launch aid from France and Germany.
But apparently it removes any overhang of this aid in the long running trade dispute between the US and Europe (Boeing vs Airbus) at the World Trade Organization.
As the dispute wound its way through the WTO since the US filed its complaint nearly 15 years ago, the only surviving issues were subsidies for the A380 and A350.
Based on precedent involving termination of the A340 program, in which the WTO ruled there was no further harm to Boeing once the last A340 was delivered, the remaining launch aid was rendered moot in the context of the WTO. The governments wound up eating the balance of the launch aid.
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Airbus’ 2018 results conference: Enders hands Faury a clean deck
By Bjorn Fehrm
February 14, 2019, ©. Leeham News: Airbus announced its 2018 results today at a press conference in Toulouse. It was the last Yearly press conference for Airbus CEO Tom Enders and CFO Harald Wilhelm. Both leave the company in the coming months.
The press conference was colored by the CEO hand over to Guillaume Faury but also the winding up of the A380 program, a problem Enders didn’t want his successor to inherit. The gone year delivered overall results as guided a year ago despite closures charges for A380 and further provisions for A400M.
Launching the NMA could mean new business model for Boeing
By Dan Catchpole
Feb. 14, 2019, © Leeham News: Commercial aerospace’s super cycle is alive and well—and looks to keep going through the foreseeable future. Major suppliers and OEMs, and industry analysts at the Pacific Northwest Aerospace Alliance annual conference are all optimistic about the industry demand. Analysts noted potential concerns, such as a trade war with China, a catastrophic terrorist attack, or an economic shock. However, even the often bubble-bursting Richard Aboulafia, an aerospace analyst and vice president at the Teal Group, said the party likely will keep rolling on for several years more.
Amid such a sunny forecast, Boeing is weighing whether to overhaul its commercial aerospace business model, said Kevin Michaels, a co-founder of AeroDynamic Advisory.
The company is working to close the business case on a new midmarket airplane (NMA), already dubbed the 797 by industry watchers. The NMA—or, if Boeing does not launch it, then its next single aisle airplane—likely will usher in “the next evolution of the jetliner business model,” Michaels said.
The new model, he said, has four key aspects:
- Greater vertical integration and in-sourcing work;
- Targeted, yet aggressive expansion of services;
- Redefining supplier relationships to capture more aftermarket revenue; and
- Introducing model-based systems engineering.
A simple solution to congested skies
By Dan Catchpole
Danieljcatchpole[at]gmail[dot]com
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Introduction
Feb. 14, 2019, ©. Leeham News: Flight delays cost the airline industry
Traffic back ups are increasing–so much so that Airbus has invested in improving air traffic management to avoid congestion affecting aircraft sales.
billions of dollars each year. They cause travelers untold aggravation and inconvenience every day. And the main culprit—air traffic congestion—is only going to get worse as Boeing and Airbus deliver tens of thousands of jetliners over the next couple decades.
Regulators, lawmakers and the aviation industry in the United States have settled on spending billions of taxpayer dollars on NextGen—after having already spent billions—to implement complex technical solutions to keep the skies safe and cut down on flight delays.
The Federal Aviation Administration (FAA) estimated in 2017 that implementing NextGen will cost roughly $35.7 billion by 2030–$20.6 billion from the FAA and another $15.1 billion from the aviation industry.
NextGen has moved with the swiftness of a sprawling, technocratic federal program—that is to say like an elephant at the ballet. It has endured delays and cost escalation, though these have not been crippling. However, it is years away from unclogging America’s congested air spaces.
Moreover, there are very real questions as to whether NextGen will be able to deliver all the FAA promises it can.
Summary
- Air spaces are getting more crowded, leading to greater flight delays.
- Airbus is concerned that congestion could hurt demand for jetliners, and is taking steps to improve air traffic flow.
- Substantial questions exist as to NextGen’s ability to unclog air traffic congestion.
- Taking a system-wide approach that taps into airlines’ desire to maximize profits could be implemented now, say proponents.