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By Bjorn Fehrm
March 10, 2022, © Leeham News: We looked into the replacement market for the large twin-aisles and freighters in our February 28th article.
The obvious replacements for the market’s large Twin-Ailes are Airbus’ A350-1000, and Boeing’s 777-9, replacing 747s and A380s but more often 777-300ERs.
We compare the 777-300ER to the A350-1000 and 777-9 to understand the driving forces behind such replacements.
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By Vincent Valery
Introduction
March 7, 2022, © Leeham News: Several airlines announced orders for new-generation single-aisle aircraft in recent months. Air France – KLM and jet2.com announced Airbus A320neo family orders, while Allegiant and Qatar announced Boeing 737 MAX deals. SmartLynx, a Latvian ACMI carrier, will operate 737 MAXes on operating leases from SMBC Aviation Capital.
Despite the lingering effects of the COVID-19 pandemic, airlines are eager to order newer-generation single-aisle aircraft to improve their environmental footprint and secure delivery slots, notably on the A320 production line. The low level of interest rates by historical standards also facilitates those transactions.
(This analysis does not include the Russia-Ukraine crisis, the full impacts of which to commercial aviation are still in the future.)
Such orders represent once-in-a-generation opportunities for OEMs to “flip” an airline away from the other one.
Many airlines operate A320ceos or 737 NGs but have not yet ordered new-generation single-aisle aircraft. LNA analyses this population.
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March 4, 2022, ©. Leeham News: This is a complementary article to Part 9. Parallel Hybrid. It uses Leeham Company’s Aircraft Performance Model from our consultancy practice to analyze the design of a Parallel Hybrid aircraft for regional operations.
Our design brief is to make turboprop upgrade packages for De Havilland DH8-200,-300, and-400 aircraft. By using a Parallel Hybrid we could “target a 30% reduction in fuel burn and CO2 emissions, compared to a modern regional turboprop airliner” according to Pratt & Whitney Canada. Time to check if we can reach these levels.
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By Bjorn Fehrm
March 3, 2022, © Leeham News: Last week, we looked at the predicted performance of a new version of Boeing’s 787-10 with an increased Gross Weight as announced by Boeing (called 787-10 HGW by us). We compared its performance and economics to Airbus’ A350-900, the nearest competitor.
The comparison was over a very long route, LAX to Sydney, where the 787-10 HGW performed well but was limited on the cargo side. Now we fly San Franciso to Tokyo, a more typical route for these aircraft, looking at the performance and operating economics.
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By Vincent Valery
Introduction
Feb. 28th, 2022, © Leeham News: In recent weeks, we compared the 787-10 Heavy Gross Weight (HGW) performance against the A350-900. The 787-10 HGW will impact sales campaigns against the A350-900 and those of larger aircraft, the A350-1000 and 777X, and large freighters.
LNA now analyses the potential replacement market for very large aircraft (seating 350 or more passengers in standard configurations) and large factory-built freighters.
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February 25, 2022, ©. Leeham News: This is a complementary article to Part 8. Serial Hybrid. It uses Leeham Company’s Aircraft Performance Model from our consultancy practice to analyze the design of a hybrid aircraft for short-haul commuter operations.
Our design brief is to make an aircraft that uses a minimum of carbon-based fuel by combining battery-based energy with energy from a generator driven by a gas turbine. Such a combination is called a Serial Hybrid.

Figure 1. Different electric aircraft architectures compared with the classical Turbofan/Turboprop. Source: Leeham Co.
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By Bjorn Fehrm
February 24, 2022, © Leeham News: The CEO of Boeing Commercial Aircraft (BCA), Stan Deal, said at the Singapore Air show the company worked on increased gross weight versions of both the 787-9 and -10.
Target is to get the 787-10 to the range of the aircraft it shall replace, the 777-200ER and -300ER. It means more than 7,000nm of range against the 6,400nm of today.
How many tonnes of increased Gross weight does this mean, and what would be the performance compared with the Airbus A350-900? We use our airliner performance model to find out.
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By Bjorn Fehrm
February 16, 2022, © Leeham News: Last week, we looked at the operating economics of the Boeing 777-8F and Airbus A350F. Both freighters are new launches over the last 6 months with planned service entry 2025 (A350F) and 2027 (777-8F).
We flew the freighters with the help of our Aircraft Performance Model over a typical freight trunk route from Shanghai to Anchorage at a full load and compared their economics with the present freighter in this class, the Boeing 777F. Readers demanded we fly them with a part load and on shorter routes, so here we go.
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By Vincent Valery
Introduction
Feb. 14th, 2022, © Leeham News: Boeing Commercial Aircraft (BCA) CEO Stan Deal announced that the company was working on a high gross weight (HGW) variant of the 787-10 Dreamliner.
LNA later revealed that the maximum takeoff weight (MTOW) increase would also be available on the 787-9. The goal of the increased MTOW is to make the 787-10 more competitive against the A350-900, which currently has a significantly higher nominal range: 6,430 nm vs. 8,100 nm. The 787-10 HGW range should match that of the 777-200ER.
The 787-10 HGW targets replacing larger, older-generation, twin-aisle aircraft still in service, notably the 777-200ER and 777-300ER. Boeing’s primary goal is to prevent customers from ordering the Airbus A350-900 due to a lack of payload-range for the 787-10.
Boeing paused developing the 777-8 around 2.5 years ago, and it is not clear whether the variant will ever enter service. Therefore, without the 787-10 HGW, there would be a sizable seat gap between the 787-9 (290) and 777-9 (414) in the American OEM’s long-range twin-aisle offering. Both A350 variants are in that seat gap.
The arrival on the market of the 787-10 HGW has the potential to affect sales opportunities for the A350 and the 777X. LNA analyses the potential replacement market for long-range aircraft seating 300 or more passengers in this context.