Commercial Aviation
CFM LEAP Engine Achieves Major Milestones in Aviation Performance
CFM LEAP engine reaches 60 million flight hours, delivers fuel efficiency and durability upgrades, supporting a sustainable aviation future.
CFM’s LEAP Engine: Charting a Course Through Milestones and Maturity
In the world of commercial aviation, the engine is the heart of the aircraft. It’s where raw power, cutting-edge engineering, and economic reality converge. The CFM International LEAP engine has rapidly become a central figure in this narrative, powering some of the most common aircraft in the skies today. As a joint venture between GE Aerospace and Safran Aircraft Engines, CFM has positioned the LEAP family as the successor to the legendary CFM56, an engine that set industry standards for decades. The LEAP program’s significance lies not just in its technological advancements but in its sheer scale and the speed of its adoption across the globe.
The transition to a new generation of engines is a monumental task, filled with immense challenges and high stakes for airlines, manufacturers, and passengers alike. The LEAP engine entered service in 2016 with promises of significant leaps in fuel efficiency, reduced emissions, and quieter operation. Now, with years of operational data and millions of flight hours logged, we can move beyond projections and analyze the real-world performance and maturity of this critical piece of aviation technology. Examining its journey provides a clear picture of modern engine development, from celebrated performance milestones to the practical engineering challenges of operating in diverse and demanding global environments.
Unpacking the Numbers: LEAP’s Operational Dominance
The story of the LEAP engine is, in many ways, a story told by the numbers. The fleet’s rapid accumulation of operational experience is a key indicator of its reliability and the trust airlines have placed in it. As of September 2024, the global LEAP engine fleet had surpassed an impressive 60 million flight hours and 26 million flight cycles. This isn’t just a vanity metric; each hour and cycle represent vast amounts of data that feed back into the program, allowing for continuous refinement and a deeper understanding of how the engine performs over its lifespan. This rapid accumulation is noted as one of the fastest in the history of commercial aviation.
Record-Breaking Flight Hours and Reliability
For an airline, an engine’s value is measured by its ability to keep aircraft flying safely and on schedule. The LEAP engine has demonstrated exceptional performance in this regard, achieving a dispatch reliability rate of over 99.95%. This figure means that flight delays or cancellations attributed to engine issues are exceedingly rare, a critical factor for the operational stability and profitability of the 165 operators that rely on the LEAP fleet. Powering approximately 2,300 aircraft, this level of reliability, maintained across a vast and growing fleet, underscores the fundamental soundness of the engine’s design and the effectiveness of its support network.
The sheer volume of operational hours provides a foundation for maturity. With every flight, CFM gathers more data on engine performance under varied conditions, from short-haul domestic routes to long-haul international flights, and in climates ranging from arctic cold to desert heat. This continuous feedback loop is invaluable for predictive maintenance, allowing engineers to anticipate issues before they become critical and to schedule shop visits more efficiently. It’s this deep well of experience that allows the program to mature, moving from early-service learning to a state of optimized, predictable performance.
The Efficiency and Environmental Edge
At its core, the LEAP engine was designed to address two of the most pressing issues in aviation: fuel consumption and environmental impact. Compared to its predecessor, the CFM56, the LEAP engine delivers a 15% to 20% improvement in fuel efficiency and a corresponding reduction in CO2 emissions. This is a significant step forward, offering airlines substantial savings on fuel, which is often their largest operating expense. The real-world impact of this efficiency is staggering; since its introduction, the LEAP fleet has enabled operators to save more than 35 million tons of CO2.
This efficiency gain is the result of advanced technologies, including the use of lightweight and durable materials like Ceramic Matrix Composites (CMCs) and the innovative debris rejection system. Beyond the benefits to the balance sheet and the environment, the LEAP engine also brings a significant reduction in noise. This makes it a “good neighbor” at airports, helping airlines meet increasingly strict noise regulations in communities around the world. The combination of lower fuel burn, reduced emissions, and quieter operation makes the LEAP engine a cornerstone of the aviation industry’s efforts to operate more sustainably.
“The LEAP engine family has achieved one of the fastest accumulations of flight hours in commercial aviation history. Our focus for the next 25 million hours and beyond is to continue to deliver on our commitments to keep our operators flying.” – Gaël Méheust, President and CEO of CFM International.
Engineering the Future: Production Ramps and Durability Enhancements
While operational performance is critical, an engine program’s success also hinges on the manufacturer’s ability to build and deliver it at scale. The demand for the LEAP engine has been immense, driven by high-volume orders for the Airbus A320neo and Boeing 737 MAX families. Meeting this demand requires a robust and resilient supply chain, a challenge that CFM has been actively managing. The company’s production numbers reflect this ramp-up, with 1,570 LEAP engines delivered in 2023, a 38% increase over the previous year.
Scaling Production to Meet Unprecedented Demand
The challenge doesn’t end there. CFM holds a backlog of over 10,675 LEAP engines, a figure that speaks volumes about the market’s long-term confidence in the product. To address this, the company has set ambitious production targets, aiming for a 15-20% increase in deliveries for 2025 and a long-term goal of producing 2,500 engines per year by 2028. Hitting these targets requires meticulous coordination across a global network of suppliers and manufacturing facilities. It’s a monumental industrial undertaking that is essential to getting new, more efficient aircraft into the hands of airlines.
This production ramp-up is not just about quantity; it’s also about quality and consistency. As production rates increase, maintaining the highest standards of manufacturing is paramount. Innovations in the production process, such as the simpler design of newly upgraded turbine blades, are expected to help speed up manufacturing without compromising quality. Successfully navigating this production increase is a key focus for CFM, ensuring that the promises made in order books are translated into engines delivered on the flight line.
Addressing ‘Teething Issues’ Head-On
No new engine program is without its challenges, and the LEAP has faced what are often termed “teething issues,” particularly related to durability in harsh operating environments. Regions with high levels of dust, sand, and pollution, such as the Middle East and parts of Asia, have proven to be particularly demanding on engine components. These conditions can accelerate wear on sophisticated parts, leading to more frequent maintenance and reduced “time on wing,” the amount of time an engine can operate on an aircraft before needing to be removed for a shop visit.
In response, CFM has taken a direct and transparent approach. The company developed a “durability kit” specifically designed to enhance the engine’s resilience. This kit includes redesigned high-pressure turbine blades and new fuel nozzles, among other upgrades. The upgraded components for the LEAP-1A, which powers the Airbus A320neo family, were certified in late 2024 and are now standard on all new production engines. A similar set of upgrades for the LEAP-1B, used on the Boeing 737 MAX, is in development and expected to be certified about a year later.
This proactive approach to engineering solutions demonstrates a commitment to the fleet’s long-term performance and to supporting its customers’ operational needs. By incorporating these durability enhancements, CFM aims to extend the engine’s time on wing, reduce maintenance costs for operators in challenging environments, and ensure the LEAP engine lives up to its promise of reliability throughout its entire service life. It is a clear example of a program maturing in real-time, learning from operational experience and implementing tangible improvements.
The Next Chapter for the LEAP Program
The CFM LEAP engine has firmly established itself as a workhorse of modern aviation. It has successfully navigated its initial entry into service, achieving remarkable milestones in flight hours and delivering on its core promises of fuel efficiency and reliability. The program’s journey thus far has been a balancing act between celebrating its performance achievements, like saving millions of tons of CO2, and actively addressing the real-world operational challenges that come with a global deployment of this scale. The development of durability upgrades is a testament to a program that is responsive and committed to continuous improvement.
Looking ahead, the focus for the LEAP program is twofold. First, successfully executing the ambitious production ramp-up to meet the massive backlog is paramount. This will require continued resilience and innovation throughout the supply chain. Second, the ongoing maturation of the fleet through upgrades and data-driven maintenance will be key to maximizing value for operators. With the fleet of LEAP-powered aircraft projected to double by 2030, the engine’s role in shaping a more efficient and sustainable aviation industry is only set to grow. The next chapter for LEAP will be defined by its ability to scale, adapt, and continue delivering performance for a generation to come.
Frequently Asked Questions
Question: What makes the LEAP engine more efficient than older engines?
Answer: The LEAP engine provides a 15-20% improvement in fuel efficiency and CO2 emissions compared to its predecessor, the CFM56. This is achieved through the use of advanced materials like Ceramic Matrix Composites (CMCs), a higher bypass ratio, and other sophisticated aerodynamic design features.
Question: What aircraft use the LEAP engine?
Answer: The LEAP engine family powers some of the world’s most popular single-aisle aircraft. The LEAP-1A powers the Airbus A320neo family, the LEAP-1B powers the Boeing 737 MAX family, and the LEAP-1C powers the Comac C919.
Question: What is CFM doing to improve the engine’s durability?
Answer: To address accelerated wear in harsh, dusty environments, CFM has developed and is implementing a “durability kit.” This includes redesigned high-pressure turbine blades and new fuel nozzles designed to extend the engine’s time on wing. These upgrades are now standard in new LEAP-1A engines and are in development for the LEAP-1B.
Sources: CFM International
Photo Credit: CFM
Aircraft Orders & Deliveries
Boeing and Icelease Agree on Up to Three 767-300BCF Aircraft
Icelease signs for up to three Boeing 767-300BCF aircraft, with conversions at ST Engineering Singapore starting Q1 2027.
The Boeing Company and aircraft lessor Icelease have finalized an agreement for up to three Boeing 767-300 Boeing Converted Freighter (BCF) aircraft, marking the leasing firm’s expansion into the medium widebody cargo market.
Announced in a press release on November 2, 2026, the transaction includes one firm order and options for two additional conversions. The aircraft will join the managed cargo portfolio of IAT Leasing, a Dublin-based sister company to Icelease.
Conversion timeline and operational details
The formal signing ceremony for the agreement took place on October 22, 2026, during the Cargo Facts Symposium. The physical conversion work will be executed at ST Engineering’s airframe maintenance, repair, and overhaul (MRO) facilities located in Singapore.
Induction of the first Boeing 767-300 aircraft for conversion is scheduled for the first quarter of 2027. Delivery of the completed Boeing 767-300BCF to Icelease and IAT Leasing is expected to follow in the second quarter of 2027. The Boeing Converted Freighter programs are managed by The Boeing Company’s Global Services division.
Lindsey Douglas, Vice President of Cabin, Modifications, Maintenance and Digital Services at The Boeing Company, stated that the agreement underlines the continued collaboration between the two companies to meet global cargo demand.
Sigthor Einarsson, Managing Partner at Icelease, noted the strategic importance of the deal for the lessor’s broader fleet strategy.
“This agreement with Boeing to convert up to three Boeing 767 aircraft marks an important milestone for both Icelease and its Dublin-based sister company IAT Leasing,” Einarsson said.
Icelease and IAT Leasing’s growing cargo portfolio
The Boeing 767-300BCF order builds upon an established relationship between the manufacturer and the lessor. Icelease, an aircraft leasing company with a 21-year history, specializes in aircraft acquisitions, leasing, operations, finance, and investor relations. The firm was originally formed as a spinoff from Icelandair in 2005.
On November 14, 2021, Icelease placed an order for 11 Boeing 737-800 Boeing Converted Freighter (737-800BCF) aircraft during the Dubai Airshow. That order established Icelease as the launch customer for a new conversion line at Boeing’s London Gatwick MRO facility.
The newly ordered widebody freighters will be managed by IAT Leasing. Incorporated in late 2023, IAT Leasing is owned by four equity partners. The Dublin-based entity has rapidly built a portfolio of approximately 40 narrowbody and widebody passenger and Cargo aircraft, which are leased to operators globally. The company’s current managed cargo portfolio already includes seven Boeing 737-800BCF aircraft.
“The history between Icelease and Boeing dates over 20 years and includes a multitude of new aircraft deliveries as well as cargo conversions,” Einarsson said. “The Boeing 767-300BCF will join the growing managed cargo aircraft portfolio of IAT Leasing, which already includes seven Boeing 737-800BCF and other freighters leased to various customers.”
Widebody freighter market outlook
The Boeing 767-300BCF is positioned to serve regional and long-haul cargo networks as a highly efficient medium widebody converted freighter. The aircraft offers a payload capacity of 57 tonnes and a maximum range of 3,300 nautical miles.
The Icelease order aligns with broader industry forecasts regarding long-term air cargo growth. On October 28, 2026, The Boeing Company released projections indicating that the global freighter fleet will exceed 4,000 airplanes by 2045. The manufacturer anticipates that air cargo traffic will double over the same period, providing a sustained demand environment for passenger-to-freighter conversion programs across both narrowbody and widebody platforms.
AirPro News analysis
We view Icelease’s transition from narrowbody to medium widebody conversions as a natural progression for lessors seeking to capture higher-yield cargo segments. While the Boeing 737-800BCF serves domestic and regional express networks effectively, the Boeing 767-300BCF provides the volume and range necessary for intercontinental e-commerce flows. By securing conversion slots at ST Engineering for 2027, Icelease and IAT Leasing are positioning their portfolio to absorb capacity demands as older widebody freighters face retirement toward the end of the decade. The decision to allocate these assets to the recently formed IAT Leasing also highlights the robust investor appetite for dedicated freighter leasing vehicles.
Photo Credit: Boeing
Commercial Aviation
Avolon Launches Constellation Aviation With $1.4B Portfolio
Avolon, I Squared Capital, and ADIA launch Constellation Aviation with a $1.4B aircraft portfolio targeting $6B in scale.
Avolon, I Squared Capital, and the Abu Dhabi Investment Authority (ADIA) have launched Constellation Aviation, a new joint venture aircraft leasing platform seeded with a $1.4 billion initial portfolio.
Announced in a press release on November 2, 2026, the partnership combines institutional capital with Avolon’s aircraft origination and management expertise. The venture is designed to provide airlines with essential fleet capacity amid ongoing constrained aircraft manufacturing, while offering investors exposure to long-term contracted cash flows.
Seed portfolio and operational structure
Constellation Aviation will acquire its initial seed portfolio directly from Avolon. The $1.4 billion portfolio consists of 22 modern, fuel-efficient aircraft, specifically Boeing 737 MAX, Airbus A320neo, and Airbus A330neo models. The aircraft have an average age of five years and are currently leased to 17 airlines across 15 countries.
Under the terms of the joint venture, Avolon will retain a minority equity interest in Constellation Aviation. The Dublin-based lessor will also serve as the exclusive aircraft manager and servicer for the platform, leveraging its existing global relationships.
Avolon Chief Financial Officer Ross O’Connor stated that the joint venture will expand the company’s asset management business. He noted that the partnership reflects the confidence leading institutional investors place in the aviation sector and in Avolon’s ability to originate, manage, and service high-quality assets.
The transaction is supported by a syndicated debt facility provided by a consortium of international banks. BNP Paribas, Crédit Agricole CIB, Société Générale, ING, MUFG, and Mizuho are acting as joint lead bookrunners. Mizuho is also serving as the financial advisor to the investors. Milbank LLP acted as legal counsel to the investors, and Clifford Chance acted as legal counsel to Avolon. The deal remains subject to standard regulatory approvals.
Capitalizing on constrained manufacturing
The launch of Constellation Aviation occurs during a period of significant supply chain disruption in the aerospace sector. Aircraft lessors currently own approximately half of the global airline fleet. This share is in high demand due to substantial backlogs in new aircraft deliveries from major manufacturers.
Gautam Bhandari, Co-Founder, Managing Partner, and Global Chief Investment Officer of I Squared Capital, highlighted this dynamic in the announcement.
“Aircraft manufacturers’ order books now stretch a decade or more into the future, and airlines rely on lessors with scale and aircraft delivery slots to grow their fleets. Avolon has one of the largest order books with Boeing and Airbus and thus enjoys significant benefits of scale.”
Avolon, a subsidiary of China‘s Bohai Leasing Co Ltd, recently solidified its delivery pipeline. On October 9, 2026, the lessor placed a firm order for 250 new-technology aircraft. That order included 140 Boeing 737 MAX aircraft and 110 Airbus aircraft, split between 75 A320neo family and 35 A330neo family jets. The transaction brought Avolon’s total order book to 749 aircraft. As of September 30, 2026, Avolon reported an owned, managed, and committed fleet of 1,092 aircraft, serving 138 airlines in 62 countries.
The new joint venture partners bring substantial financial weight to the platform. I Squared Capital is an independent global infrastructure investor headquartered in Miami with over $60 billion in assets under management. ADIA, established in 1976, is a globally diversified sovereign wealth fund investing on behalf of the Government of Abu Dhabi.
Khadem AlRemeithi, Executive Director of the Infrastructure Department at ADIA, described aircraft leasing as a resilient and growing sector supported by strong structural demand for modern aircraft.
Long-term growth ambitions
While the platform launches with a $1.4 billion portfolio, the partners intend to grow the venture significantly. According to reporting by Reuters, Constellation Aviation aims to scale its portfolio over time with ambitions to reach a $6 billion valuation.
The creation of Constellation Aviation mirrors other recent large-scale lessor partnerships designed to distribute capital risk. Reuters noted that the structure is similar to SMBC Aviation Capital’s deal last year to share the risk of acquiring U.S.-based rival Air Lease Corp for $7.4 billion with a group of investors via a newly established entity.
AirPro News analysis
The formation of Constellation Aviation highlights a continuing shift in how aircraft leasing is financed. By partnering with I Squared Capital and ADIA, Avolon is effectively utilizing a capital-light growth strategy. The lessor recently committed to 250 new aircraft in October, a massive capital expenditure. This joint venture allows Avolon to place those future deliveries into a managed vehicle where it earns servicing fees and retains a minority stake, without carrying the full debt burden on its own balance sheet.
Furthermore, the involvement of a major infrastructure fund like I Squared Capital underscores that modern commercial aircraft are increasingly viewed by institutional investors as core infrastructure assets rather than alternative investments. With Boeing and Airbus sold out for years, existing delivery slots and young, fuel-efficient aircraft are scarce commodities. Sovereign wealth funds and infrastructure managers are willing to deploy billions to secure the long-term, contracted yield these assets generate, provided they have an experienced servicer like Avolon to manage the technical and placement risks.
Photo Credit: Avolon
Aircraft Orders & Deliveries
AerCap Leases Two Boeing 777-300ERSF to Turkish Airlines
AerCap finalizes lease of two Boeing 777-300ERSF freighters to Turkish Airlines, with deliveries scheduled for 2027.
AerCap Holdings N.V. has finalized lease agreements with Turkish Airlines for two Boeing 777-300ERSF converted freighters, with deliveries scheduled between March and September 2027.
Announced on October 29, 2026, the transaction expands the Turkish flag carrier’s dedicated cargo capacity while utilizing Etihad Engineering’s maintenance, repair, and overhaul (MRO) facility in Abu Dhabi for the passenger-to-freighter (P2F) modifications. In a press release detailing the agreement, the Dublin-based aviation lessor emphasized the strategic alignment between the aircraft’s capabilities and the airline’s expanding freight network.
Expanding Turkish Airlines’ cargo operations
The agreement builds on an existing relationship between AerCap and Turkish Airlines, which operates a large international network requiring substantial dedicated cargo lift. The addition of the two widebody freighters is intended to support the carrier’s volume requirements on high-demand international routes.
Peter Anderson, Chief Commercial Officer at AerCap, stated that the aircraft will provide the airline with additional cargo capacity combined with the performance capabilities specific to the 777-300ERSF platform. Financial terms of the lease agreements, including the exact lease duration and the specific aircraft serial numbers, were not disclosed in the announcement.
The Big Twin conversion program
The Boeing 777-300ERSF, marketed as “The Big Twin,” is a P2F conversion program developed through a joint venture between AerCap and Israel Aerospace Industries (IAI). It represents the first program designed to convert the Boeing 777-300ER into a dedicated freighter configuration.
According to AerCap’s cargo division, the 777-300ERSF offers 25 percent more cargo volume than the factory-built Boeing 777-200LRF. This increased capacity positions the converted twin-engine aircraft as a cost-effective replacement for aging four-engine Boeing 747 freighters currently operating in the global fleet.
AerCap delivered the first 777-300ERSF to launch customer Kalitta Air in September 2025. Since that initial delivery, the lessor has handed over aircraft to Fly Meta and secured lease agreements with other major operators, including Ethiopian Airlines and China Southern Group.
Regional conversion strategy in Abu Dhabi
The physical conversion of the two aircraft destined for Turkish Airlines will be executed at the Etihad Engineering MRO hub in Abu Dhabi, United Arab Emirates. This facility serves as a dedicated regional conversion center for the 777-300ERSF program.
Anderson highlighted the strategic importance of the location, noting that the Abu Dhabi facility provides a regional platform capability that enables aircraft to be converted in the Middle East prior to delivery. This localized approach is designed to efficiently serve customers across the Europe, Middle East, and Africa (EMEA) market.
“The dedicated 777-300ERSF conversion facility at Etihad Engineering’s MRO hub in Abu Dhabi provides an important regional platform capability, enabling the aircraft to be converted in the Middle East ahead of delivery to Turkish Airlines,” Anderson said.
AerCap’s broader market position
The Turkish Airlines agreement follows a period of strong financial performance for AerCap. On October 28, 2026, the company reported its third-quarter financial results, citing record adjusted earnings per share and raising its full-year 2026 guidance amid high lease rates and sustained demand for aviation assets.
As of September 30, 2026, AerCap’s total portfolio included 1,537 owned and managed aircraft, alongside approximately 1,300 engines and over 300 helicopters. The company’s dedicated cargo division manages a fleet of approximately 110 owned, managed, and on-order freighters, having completed more than 160 passenger-to-freighter conversions to date.
AirPro News analysis
We view the placement of 777-300ERSF aircraft with a major network carrier like Turkish Airlines as a strong validation of the Big Twin program’s economic proposition. As operators look to phase out older Boeing 747 freighters, the 25 percent volume advantage over the 777-200LRF makes the converted 300ER an attractive middle ground between factory-built twin-engine freighters and legacy four-engine platforms. Utilizing the Etihad Engineering facility in Abu Dhabi for a European customer also demonstrates the logistical efficiency of AerCap’s decentralized conversion strategy, reducing ferry times and regional friction for EMEA operators.
Photo Credit: AerCap
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