CFM International LEAP-1B28
CFM International LEAP-1B28 high-bypass turbofan variant in the LEAP-1B family and the exclusive engine branch for Boeing 737 MAX aircraft. EASA's current type-certificate data sheet rates LEAP-1B28 at 13,041 daN (approximately 130.41 kN) takeoff thrust; Boeing and CFM identify the LEAP-1B installation across the 737 MAX family.
Identity
- Aliases
- LEAP-1B28CFM LEAP-1B28CFM International LEAP-1B28
- Domains
- aviation
- Identity Level
- variant
- Kind
- turbofan
- Name
- CFM International LEAP-1B28
- Status
- active
Details
- Air Breathing Specs
- Max Thrust Kn
- 130.41
- Sea Level Static Thrust Kn
- 130.41
- Description
- CFM International LEAP-1B28 high-bypass turbofan variant in the LEAP-1B family and the exclusive engine branch for Boeing 737 MAX aircraft. EASA's current type-certificate data sheet rates LEAP-1B28 at 13,041 daN (approximately 130.41 kN) takeoff thrust; Boeing and CFM identify the LEAP-1B installation across the 737 MAX family.
- Developers
- Family
- Manufacturers
Links
- Official Url
- https://www.easa.europa.eu/en/downloads/20810/en
Assets & Meta
- Creation Time
- August 6, 2026 at 17:55:48 UTC
- Updated Time
- August 23, 2026 at 06:03:30 UTC
Other
- Sources
- Accessed Date
- 2026-08-14
- Note
- EASA Issue 09 TCDS E.115 lists LEAP-1B28 as a distinct model and gives 13,041 daN takeoff thrust and 12,762 daN maximum continuous thrust for the LEAP-1B28 rating group.
- Publisher
- European Union Aviation Safety Agency
- Title
- LEAP-1B Series Engines Type Certificate Data Sheet
- Accessed Date
- 2026-08-14
- Note
- Boeing identifies CFM LEAP-1B as the engine specifically designed for the 737 MAX family.
- Publisher
- The Boeing Company
- Title
- 737 MAX By Design
- Accessed Date
- 2026-08-14
- Note
- CFM identifies LEAP-1B as the exclusive powerplant for the Boeing 737 MAX family; EASA supplies the exact -1B28 model boundary.
- Publisher
- CFM International
- Title
- Boeing 737 Type Certificate Data Sheet