CFM International LEAP-1B28B2
The CFM International LEAP-1B28B2 is a certified model in the LEAP-1B turbofan series. The engine uses separate high- and low-pressure rotors to drive the core compressor and fan, with a full-authority digital control system. EASA lists -1B28B2 separately from -1B28, -1B28B1, -1B28B2C and -1B28B3; those suffixes identify distinct approved configurations whose ratings and operating limitations must be checked individually.
Identity
- Aliases
- LEAP-1B28B2LEAP 1B28B2CFM LEAP-1B28B2
- Domains
- aviation
- Identity Level
- variant
- Kind
- turbofan
- Name
- CFM International LEAP-1B28B2
- Status
- active
Details
- Air Breathing Specs
- Max Thrust
- …
- Description
- The CFM International LEAP-1B28B2 is a certified model in the LEAP-1B turbofan series. The engine uses separate high- and low-pressure rotors to drive the core compressor and fan, with a full-authority digital control system. EASA lists -1B28B2 separately from -1B28, -1B28B1, -1B28B2C and -1B28B3; those suffixes identify distinct approved configurations whose ratings and operating limitations must be checked individually.
- Developers
- Family
- Manufacturers
Links
Assets & Meta
- Creation Time
- August 7, 2026 at 00:02:45 UTC
- Updated Time
- October 17, 2026 at 12:24:52 UTC
Other
- Sources
- Accessed Date
- 2026-08-06
- Note
- Official EASA certification announcement confirms the LEAP-1B engine received an EASA Type Certificate.
- Publisher
- European Union Aviation Safety Agency
- Title
- EASA certifies CFM LEAP-1B
- Accessed Date
- 2026-08-06
- Note
- Official EASA type-certificate record identifies the LEAP-1B series and its approved model data.
- Publisher
- European Union Aviation Safety Agency
- Title
- EASA.E.115 LEAP-1B series engines
- Accessed Date
- 2026-08-06
- Note
- Official EASA certification-basis document enumerates the exact LEAP-1B28B2 model designation.
- Publisher
- European Union Aviation Safety Agency
- Title
- EASA Certification Basis — LEAP-1B
- Accessed Date
- 2026-08-06
- Note
- Official Boeing airport-planning document identifies the CFM LEAP-1B engine as the 737 MAX powerplant.
- Publisher
- The Boeing Company
- Title
- 737 MAX Airport Characteristics