Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- Boeing wants to remarket China’s airplanes. It’s costly and time consuming. April 28, 2025
- Bjorn’s Corner: Air Transport’s route to 2050. Part 19. April 25, 2025
- How good is the C929? Part 2. April 24, 2025
- Boeing First Quarter Results Update: China is 10% of the backlog, with 500 in “Unidentified” April 24, 2025
- Boeing First Quarter Results: Tariffs, Return flights, $10.55bn asset sale April 23, 2025
Fundamentals of airliner performance, Part 6; The engine
By Bjorn Fehrm
19 Jan 2015: There is a lot written about the fundamentals of how aircraft fly. It is something that fascinates people and it generates a high level of understanding of these fundamentals. The same is not true for the airline turbofan engines in use today; their detailed function remains a bit of black art.
To some extent this might be because what is exiting in the engines (the thrust) is generated behind closed doors. The only visible part of the process is a rotating fan face and sometimes a slight miss-colored exhaust out the other way. There is also at takeoff a funny buzzing sound interspersed with the general engine noise. Apart from that, the most that one sees is a round nacelle and that is it.
A380neo decision likely this year, triggering the next widebody engine project
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By Bjorn Fehrm
Introduction
Jan. 12, 2015: One of the subjects which is sure to come up on Airbus annual press conference on Tuesday the 13th in Toulouse will be when and how Airbus will re-engine the A380.
Airbus Commercial CEO Fabrice Bregier vowed during the Airbus Group Global Investors Day last month that an A380neo is coming.
There is much speculation around this subject as the business case of re-engineering an aircraft that is selling at such low numbers is difficult to get to close. The business case is difficult to make work for Airbus 
(such a project will cost in the order of $2 billion) but it will be equally hard for the engine manufacturers to offer engines that have enough efficiency gain to make the overall project feasible from an efficiency improvement perspective.
Summary
- A380 Classic equals Boeing 777-300ER seat fuel costs.
- Boeing 777-9 beats A380 on CASM, an A380neo regains the advantage.
- Engine makers face hard choices to retain dominance or to broaden market penetration.
Airbus/Boeing duopoly single-aisle is safe well into 2030 decade
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Introduction
Dec. 28, 2014: Two challenges to the duopoly of Airbus and Boeing in the 150-220 seat single-aisle sector move forward in development in 2015, but neither is in a position to be a threat for the balance of this decade, nor even in the next.
Both challenges, the COMAC C919 from China, and the Irkut MC-21 from Russia, will for various reasons fall short of the Airbus A320/321 and Boeing 737-8/9 and plans to design the next generation new single-aisle airplane.
Summary
- The C919’s chief advantage was eliminated when Airbus and Boeing moved to reengine the A320 and 737 families.
- C919 retains pricing advantage but won’t overcome duopoly dominance.
- By the time the C919 enters service, Airbus and Boeing will have the second generation of LEAP and GTF engines available.
- The MC-21 takes into account better passenger comfort through a wider fuselage, but engines will be no better than those used on Airbus and Boeing.
- The MC-21 sales potential will be highly limited because Russia still hasn’t become a full trading partner due to political direction.
AirAsia A320 disappears en route in bad weather, but weather won’t be only area of investigative focus
Dec. 28, 2014: Weather will be a prime area of focus by investigators of the disappearance of AirAsia flight QZ8501. The flight, an Airbus A320-200 manufactured in 2008 and powered by CFM 56 engines, deviated from its intended flight path due to weather conditions, according to reports from officials in Indonesia.
It’s presumed the airplane’s disappearance is an accident.
With these reports, investigators will put weather conditions at the top of their list of areas to probe. They will attempt to determine whether there was a high altitude upset due to turbulence that caused the plane to lose control; whether the plane was intact when it presumably crashed into the sea or whether it came apart in flight, and if so whether this possibility was caused by stresses beyond design limits. Investigators will attempt to determine whether the plane was struck by lightning, causing a chain of events leading to a crash.
Looking ahead in 2015 in commercial aviation
Here’s a visualization of events to look for in commercial aviation in 2015.
Click to enlarge for crisp view.
737 MAX 8 could be enabler for some LCC Long Haul
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By Scott Hamilton and Bjorn Fehrm
Introduction
Figure 1. Nominal range of 737 MAX 8 from Oslo Source: Great circle mapper, Boeing. Click on Image to enlarge
Dec, 8, 2014:The Boeing 737-8 MAX is the successor to the 737-800 and has largely been thought of in this context.
Our analysis, prompted by Norwegian Air Shuttle (NAS) plans to use Boeing 737-8 MAXes to begin trans-Atlantic service on long, thin routes, comes up with a conclusion that has gotten little understanding in the marketplace: the 8 MAX has enough range and seating to open a market niche below the larger, longer-legged 757, and the economics to support profitable operations for Low Cost Carriers interested in some trans-Atlantic routes or destinations beyond the range of the -800.
Summary
- We based our analysis on our proprietary, economic modeling, assumed Norwegian cabin configuration standards.
- We compared the operating costs of the 737-8 with Norwegian’s present long haul aircraft 787-8 in a similar cabin configuration.
- The comparison range is the max endurance range for an LCC long haul 737-8, eight hours or 3,400nm air distance (no wind included).
Fundamentals of airliner performance, Part 5; Approach and landing
By Bjorn Fehrm
Dec. 2, 2015: The time has now come to cover descent and landing in our articles around airliner performance. As many aspects of descent are similar to climb we will repeat a bit what we learned in Part 4:
- For high speed operation the pilots fly on Mach as this gives him maximum information around possible effects on the aircraft when he is close to the high speed limit, the maximum Mach number. Beyond this the aircraft gets into supersonic effects like high speed buffeting or unsteady flight.
- For operations under the cross over altitude for Mach 0.78 to 300 kts IAS the pilot flies on Indicated Air Speed (IAS) which gives him maximum information how the aircraft reacts should he go close to the aircraft’s lower speed limits.
Lets now start to go through the steps that our 737 MAX 8 performs after leaving its cruise altitude.
Oil heading toward $40? Economist still thinks so, with caveats; and: NTSB issues 787 battery report, Azul’s A320/CFM order
Dec. 1, 2014: Adam Pilarski, an economist for the consulting firm Avitas, predicted several years ago that the price of oil would drop to $40bbl. Few believed him.
Oil hit $66 this week, on a steady decline over the past months, and, according to an article by Bloomberg News, could be on its way to $40.
Pilarski, who originally made his prediction in 2011 at a conference organized by the International Society of Transport Aircraft Traders (ISTAT). He predicted this price by October 2018.
In an interview with Leeham News today, Pilarski concurs that oil may hit $40 soon, though he believes the low end will be in the $40-$50 range. The low price will not for the reasons he outlined in 2011 and neither will it stay at or near $40 for long.