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 20. May 2, 2025
- Supplier Howmet exceeds expectations despite tariffs May 1, 2025
- Airbus 1Q2025 results: So far, so good, but US tariffs make future results unpredictable May 1, 2025
- Does an Airbus A220-500 need a new wing and engines? May 1, 2025
- Teamsters, Boeing have a new contract April 29, 2025
NMA focus needs to be on engines
Subscription Required
Now open to all readers
Introduction
March 19, 2018, © Leeham Co.: As the market awaits a decision by Boeing whether to launch the New Midrange Aircraft (NMA, or 797), focus has been on the aircraft’s definition and market demand.
It should be on the engines.
It doesn’t matter whether Boeing designs a fabulous airplane that’s the next best thing to sliced bread. What matters is whether the engines will be ready in time for Boeing’s suggested entry-into-service and if they are, whether they will be reliable out of the box.
The recent track record isn’t all that encouraging. Neither is Boeing’s preferred timing.
Summary
- CFM, GE, Pratt & Whitney and Rolls-Royce each had problems with their new engines. All continue.
- The Boeing NMA requires brand new engines, not derivatives.
- Engine development and certification within the Boeing preferred timeline is sporty at best.
Pontifications: Boeing faces thousands of retirements in next five years
By Scott Hamilton
March 19, 2018, © Leeham News: Boeing faces thousands of retirements in its engineering and touch-labor force ranks over the next five to 10 years, with a limited worker pool for replacements.
A national economy with a low unemployment rate of about 4.1% exacerbates the challenges of finding talent.
These numbers are important to Boeing’s current higher production rate ambitions.
They are even more important as Boeing looks to develop the New Midrange Airplane (NMA, aka 797).
LNC first discussed the looming shortage of engineers in connection with the potential creation of a new company with Embraer.
The Southeast Aerospace and Defence Conference in Mobile focuses on production transformation. Go to Airfinance Journal for program information.
Bjorn’s Corner: Aircraft drag reduction, Part 21
By Bjorn Fehrm
March 16, 2018, ©. Leeham News: In the last Corner, we looked at the drag of an airliner during cruise. We could see the thrust required to counter the drag in the thin air of 37,000 feet was low, about 4,000lbf per engine.
Now we continue with the drag created by the aircraft during descent and landing.
Figure 1. Drag of an aircraft at different airspeeds. Source: Leeham Co.
Boeing’s NMA decision entering final stretch
By Bjorn Fehrm
Subscription Required
Introduction
March 15, 2018, © Leeham News: Boeing’s NMA or 797 is taking final form ahead of a decision to launch the program later in the year.
Jon Ostrower has published the first picture of the projected aircraft, which he acknowledges might change in its final form. Figure 1 shows the smaller of the two NMA models, the 224-seat 797-6X.
Figure 1. The first sketch of the smaller 797-6X with 224 seats. Source: JonOstrower.com
We take a closer look at the 797 in its latest definition.
Summary:
- The Boeing NMA is called the 797-6X and 797-7X when presented to airlines.
- The 797 is best compared with the 767. Cabin dimensions are close to the 767-200 for the 797-6X and to the 767-300 for the 797-7X.
- The use of a more efficient cross-section, Carbon Fibre design, higher aspect ratio wing and modern engines makes the 797 a lighter and more efficient aircraft than the 767.
China tariffs on Boeing unlikely
Analysis
March 14, 2018 © Leeham News: Boeing is unlikely to face retaliatory tariffs from China following President Trump’s imposition of tariffs on China’s steel industry.
LNC believes China’s own self-interest for its airline, leasing and aerospace industry would make imposing tariffs on Boeing counter-productive.
Several media reports this week raise the prospect of China retaliating against Boeing, including these at CNBC and The New York Times. Boeing stock is off $10 or 3% in mid-day trading.
Pratt & Whitney’s Indian trouble
By Bjorn Fehrm
March 14, 2018, ©. Leeham Co: India’s Directorate General of Civil Aviation (DGCA) grounded Airbus A320neos equipped with Pratt & Whitney GTF engines with faulty compressor seals Monday.
Affected are eight A320neos of Indigo airlines and three A320neos of GoAir. The Indian groundings are unusual as they go beyond the directives of EASA and FAA for the problem.
Airbus, Boeing respond differently to engine problems
March 14, 2018, © Leeham Co.: Airbus and Boeing have engine issues on in-service airplanes, but customers point to very different responses to getting their 
grounded airplanes back in the air.
Airbus’ problems with A320neos powered by Pratt & Whitney Geared Turbo Fan engines have been making headlines almost since introduction in late 2016.
Less well publicized, but nevertheless by now well-known within the industry, has been Boeing’s 787 powered by Rolls-Royce Trent 1000 engines.
Embraer thinks a business case can be made for turboprop, but nothing soon
Subscription Required
Introduction
March 12, 2018 © Leeham Co.: Embraer isn’t planning any new airplane any time soon, but studies about a turboprop and an electric airplane are underway.
One concept of the Embraer turboprop under study.
The current focus is on introducing the Ejet-E2 into service, however. The E190-E2 goes into service next month. The E195-E2 follows next year and the E175-E2 in 2021.
Studies about the electric plane, with 50 passengers or less, perhaps are more esoteric than pending reality. Airbus and Boeing also are studying this concept.
The prospect of a turboprop may be more rooted in reality, however.
Summary
- Current turboprop designs are aging.
- Bombardier’s exit from the turboprop market is considered likely.
- Tough business case seen working with Bombardier exit.
- The ATR is too small for some airlines.
Pontifications: Small suppliers prepare for production transformation
By Scott Hamilton
March 12, 2018 © Leeham Co.: When it comes to preparing for increasing automation, robotics and transforming the way airliners will be built in the future, focus rests primarily on the big OEMs and suppliers.
The small suppliers also must prepare for this transformation.
Tool Gauge of Tacoma (WA) is one such company. I sat down with Jim Lee, manager of sales and marketing, at the Pacific Northwest Aerospace Alliance conference last month in Lynnwood (WA) to talk about transformation.
The Southeast Aerospace & Defence Conference looks at the Transformation in production and building for the future. It’s June 25-27 in Mobile (AL).
Bjorn’s Corner: Aircraft drag reduction, Part 20
By Bjorn Fehrm
March 9, 2018, ©. Leeham Co: In the last Corner, we started to go through a typical mission for an airliner and study which drag types are important when and why.
We went through the take-off and climb phases, now we continue with the cruise phase.
Figure 1. An aircraft’s drag profile as airspeed varies. Source: Leeham Co.