LEAP-1C

An environmentally-friendly engine

Designed to meet the challenge of decarbonizing air transport, the LEAP-1C engine offers COMAC C919 operators enhanced performance in terms of fuel consumption and CO2 emissions (15% lower¹), NOx emissions (up to 50% lower²) and noise (in accordance with Chapter 14).

^{1. Compared to previous-generation engines.2. In accordance with the ICAO’s CAEP/6 environmental standard.}

The LEAP-1C engine benefits from the latest innovations in materials and production processes.

Innovation from nose to tail

To achieve its remarkable performance, the LEAP-1C is packed with innovative technologies and materials. The use of a 3D woven composite material and the RTM (resin transfer molding) process developed and patented by Safran Aircraft Engines makes it possible to produce fan blades that are lighter, stronger and more durable. The low-pressure turbine blades are machined from an innovative titanium-aluminide alloy that is lighter and more resistant to high temperatures. The low-pressure turbine rings and airfoils are made of CMC (ceramic matrix composite) materials and the fuel injectors are 3D printed.

High-performance industrial organization

Thanks to Factory 4.0 facilities and unique processes, Safran Aircraft Engines has achieved a production ramp-up that is unprecedented in commercial aviation history. The LEAP engine final assembly line in Villaroche, near Paris, has earned the “Showcase for the Industry of the Future” label in France.

The LEAP production system is anchored in a multi-source approach, involving a global network of suppliers with the capacity to sustain the high delivery rates.

Proactive suppliers

With the LEAP’s success, Safran Aircraft Engines has set up a powerful logistics organization to meet strong customer demand. Its supply chain calls on more than 150 direct suppliers in 14 countries. Building on a long-term partnership approach, Safran Aircraft Engines helps suppliers continuously improve their operational performance in terms of quality, costs and lead times. This organization has largely contributed to the success of the production ramp-up.

Like its predecessor, the CFM56, the LEAP-1C engine was developed and is produced by CFM International, the successful partnership between Safran Aircraft Engines and GE.

Half a century of cooperation

Established in 1974, CFM International is a 50/50 joint company between Safran Aircraft Engines and GE. This partnership, now extended to 2050, has spawned the best-selling engine in commercial aviation history, the CFM56, and its successor, the LEAP. Today, CFM International is the global market leader in engines for mainline commercial jets (over 100 seats). Safran Aircraft Engines and GE are equal partners in the design, development, production, sale and support of all versions of the LEAP. Final assembly is performed at both GE facilities in the United States and Safran Aircraft Engines facilities in France.

Safran Aircraft Engines offers a complete package of support services for the LEAP-1C

Proximity and flexibility

Through CFM Services, Safran Aircraft Engines provides LEAP-1C customers with a wide range of services tailored to each one’s business model and evolving fleet size, including time & material contracts, support-by-the-hour contracts and customized support solutions. These services are delivered through a dozen MRO centers worldwide, which together employ over 3,000 people, more than half of them based internationally in close proximity to operators. This gives operators a high degree of fleet management flexibility and greater control over their long-term maintenance expenses.

Frequently Asked Questions

What is the typical lead time for gas turbine overhaul services?

The lead time for gas turbine overhaul services ranges from 6 to 14 weeks, depending on the damage assessment, parts availability, and whether hot-section repairs are required. Expedited options may reduce this by 30%.
Do you provide customizations for legacy turbine control systems?

Yes, we retrofit legacy systems (e.g., GE Frame 5, Siemens V94.2) with modern digital controllers, typically completing hardware integration within 4-8 weeks. Software migration requires additional validation time.
How often should industrial gas turbines undergo performance testing?

We recommend annual performance testing under ISO 3977-2 standards. Critical applications (e.g., offshore platforms) may require semi-annual tests with emissions compliance checks.
Are your radiation-hardened (rad-hard) semiconductors compliant with MIL-PRF-38535?

All rad-hard devices (e.g., FPGA, ADC) are QML Class V certified under MIL-PRF-38535 and tested to MIL-STD-883 Method 1019 for SEU tolerance. Full qualification reports are available upon request.
What temperature ranges do your military-grade ICs support?

Our ASICs and power management ICs operate across -55°C to +175°C ambient temperatures, with derating curves provided in military temperature range (MTR) datasheets.
Are PMA parts interchangeable with OEM components?

Our PMA parts (e.g., actuators, sensors) hold FAA/EASA Form 1 certification and match OEM form/fit/function. Installation requires SB/MB documentation per FAA AC 23.1529.
What traceability standards do you follow for aircraft fasteners?

All NAS/MS fasteners include full DNA traceability: melt source (AMS 2301), heat/lot numbers, and AS9100-compliant MTRs with ultrasonic test reports.
How do you handle urgent AOG (Aircraft on Ground) requests?

AOG orders ship within 4 hours for stocked items (FAA-PMA, EASA Part 21G). Non-stock critical parts trigger priority manufacturing with 72-hour max turnaround.