CFM International
CFM International, the 50/50 joint venture of GE Aerospace and Safran, makes the LEAP and CFM56 engines and uses machine learning to monitor their health in service.
Formed in 1974 and based in West Chester, Ohio, it builds the LEAP-1A for the A320neo, the LEAP-1B for the 737 MAX and the LEAP-1C for the C919. The engines are not counted as AI here; its health monitoring is, combining sensor data in probabilistic models to diagnose faults and predict maintenance. CFM says this gives 60 per cent more warning and 45 per cent higher detection rates.
VietJet signed a 12-year pay-per-flight-hour agreement for 215 LEAP-1B engines in 2017, Gulf Air extended its LEAP-1A services in June 2025 and Ryanair renewed its long-term support in 2025.
No verified deployments yet
CFM International is profiled in the companies register, but no deployment has been verified against published evidence. Records are added as evidence is reviewed and graded.
Products & Solutions
7 productsLEAP-1A
High-bypass turbofan engine powering the Airbus A320neo family, delivering 15-20% fuel burn improvement over the CFM56-5B through TAPS II combustor, 3D-woven RTM composite fan, ceramic matrix composite turbine shrouds, and additive manufactured fuel nozzles.
Narrowbody operators replacing A320ceo fleets with A320neo require an engine that delivers significant fuel burn and emissions improvements while maintaining CFM56-level reliability and dispatch rates.
- 15-20% fuel burn improvement vs CFM56-5B
- TAPS II combustor for reduced NOx emissions
- 3D-woven RTM composite fan blades
- Ceramic matrix composite (CMC) turbine shrouds
1 more feature
- Additive manufactured fuel nozzles
Technical specifications (3)
- Thrust range: 24,500-32,900 lbf
- Bypass ratio: 11:1
- EIS: August 2016
- FAA type certified
- EASA type certified
LEAP-1B
Exclusive engine for the Boeing 737 MAX family, providing 12-15% fuel burn improvement over the CFM56-7B through the same advanced materials and design technologies as the LEAP-1A adapted for the 737 MAX installation.
Boeing 737 MAX operators require an engine delivering meaningful fuel burn and emissions improvement over the 737NG CFM56-7B while fitting within the 737 MAX's low ground clearance constraints.
- 12-15% fuel burn improvement vs CFM56-7B
- Low ground clearance installation design
- TAPS II combustor
- CMC turbine shrouds
1 more feature
- 737 MAX exclusive powertrain
Technical specifications (2)
- Thrust range: 23,000-28,000 lbf
- Bypass ratio: 9:1
- FAA type certified
- EASA type certified
LEAP-1C
Engine powering the COMAC C919 narrowbody aircraft, the first LEAP variant to receive Chinese CAAC type certification, enabling the C919 to enter commercial service with Chinese airlines.
COMAC required a modern high-efficiency engine for the C919 with both CAAC and western regulatory certification to enable international operation.
- CAAC type certified
- Optimised for COMAC C919 installation
- LEAP core technology with C919-specific integration
Technical specifications (1)
- CAAC certified
- CAAC type certified
CFM56
High-bypass turbofan engine family that became the world's most widely used commercial jet engine, powering the Boeing 737 Classic, 737NG, Airbus A320ceo, A340-200/300, and A340-500/600 families across more than 600 operators worldwide.
Commercial narrowbody and medium-widebody operators required a reliable, fuel-efficient turbofan engine with low operating costs. CFM56 established the benchmark for narrowbody propulsion across four decades.
- 600+ operators worldwide
- 34,000 engines delivered
- 1.3 billion flight hours accumulated
- Multiple variants: CFM56-3 (737 Classic), CFM56-5 (A320/A340), CFM56-7 (737NG)
Technical specifications (2)
- Thrust range: 18,500-34,000 lbf (variant-dependent)
- Production closed - in-service support only
- FAA type certified
- EASA type certified
LEAP Engine Health Monitoring System
Machine learning-based engine health monitoring service for LEAP-powered aircraft, analysing performance data to detect anomalies, predict maintenance requirements, and schedule proactive interventions before in-service issues occur.
Airline operators of LEAP-powered narrowbodies need early warning of engine performance degradation to schedule proactive maintenance and avoid costly unplanned removals and AOG events.
- Machine learning performance anomaly detection
- 60% earlier preventive maintenance trigger vs traditional methods
- 45% improvement in detection rate
- Continuous in-service performance monitoring
1 more feature
- Proactive shop visit scheduling recommendations
Technical specifications (3)
- ML-based detection model
- 60% earlier trigger vs baseline
- 45% detection rate improvement
CFM RISE Programme
Revolutionary Innovation for Sustainable Engines technology programme targeting more than 20% fuel burn improvement over current LEAP engines through open fan architecture, hybrid electric capability, and advanced thermal management technologies.
Aviation's net-zero targets require a step-change in propulsion efficiency beyond the incremental improvements achievable with conventional turbofan architectures. RISE demonstrates the enabling technologies for a next-generation narrowbody engine.
- 20%+ fuel burn improvement target vs current LEAP
- Open fan (unducted) architecture
- Hybrid electric capability
- Advanced thermal management
1 more feature
- SAF 100% compatibility
Technical specifications (2)
- Target: 20%+ fuel efficiency improvement vs LEAP
- Entry into service target: 2030s
Engine Monitoring and Diagnostics Service
CFM International operational monitoring and diagnostics service providing airlines with continuous expert analysis of CFM56 and LEAP engine performance data, with a team of CFM engineers reviewing performance trends and providing advisory recommendations.
Not all airline operators have in-house engine performance engineering capability to interpret health monitoring data. CFM's managed service provides expert analysis without requiring operator investment in specialist staff.
- Continuous performance data monitoring by CFM engineers
- Trend analysis and anomaly investigation
- Advisory recommendations for maintenance scheduling
- Direct access to CFM engineering expertise
Profile data from the Aerostack companies register; deployment records from the verified register. Evidence grades: T1 first-party confirmation, T2 credible reporting. See Our approach for how records are graded.