CFM LEAP-1B
The exclusive powerplant for the Boeing 737 MAX series, custom-tailored with a 69-inch fan diameter to meet landing gear ground clearance requirements.
Manufacturer: CFM International (GE Aerospace / Safran) Max Thrust: 29,317 lbf Bypass Ratio: 9.0:1 Active Installations: 2,850
CFM LEAP-1B Technical Facts
- CFM LEAP-1B is produced by CFM International (GE Aerospace / Safran) with a maximum takeoff thrust of 29,317 lbf.
- Features an ultra-high bypass ratio of 9.0:1 and a fan diameter of 69 inches.
- Achieves a fuel burn delta of -14% vs CFM56-7B relative to previous-generation powerplants.
- Currently installed on an estimated 2,850 active commercial aircraft worldwide (100% market segment share).
- Standard equipment on aircraft families including: Boeing 737 MAX 7, Boeing 737 MAX 8, Boeing 737 MAX 9, Boeing 737 MAX 10, Boeing 737-8-200.
Engineering & Performance Specifications
Engine Architecture High-Bypass Turbofan
Takeoff Thrust 29,317 lbf
Bypass Ratio 9.0:1
Fan Diameter 69 in (175 cm)
Fuel Efficiency Delta -14% vs CFM56-7B
Segment Market Share 100%
Airframe Applications
| Aircraft Model | Aircraft Category | Propulsion Type | Option Status |
|---|---|---|---|
| Boeing 737 MAX 7 | Commercial Jet Transport | High-Bypass Turbofan | Certified / In-Service |
| Boeing 737 MAX 8 | Commercial Jet Transport | High-Bypass Turbofan | Certified / In-Service |
| Boeing 737 MAX 9 | Commercial Jet Transport | High-Bypass Turbofan | Certified / In-Service |
| Boeing 737 MAX 10 | Commercial Jet Transport | High-Bypass Turbofan | Certified / In-Service |
| Boeing 737-8-200 | Commercial Jet Transport | High-Bypass Turbofan | Certified / In-Service |