General Electric CF34-8C5B1
General Electric CF34-8C5B1 exact turbofan variant in the CF34-8 series. EASA rates normal five-minute takeoff thrust at 59.36 kN (12,670 lbf), maximum takeoff thrust at 61.34 kN (13,790 lbf), and maximum continuous thrust at 59.06 kN (13,280 lbf). GE identifies the -8C5B1 as a derated CF34-8C5 configuration with a 5:1 bypass ratio and 28:1 overall pressure ratio, entering service in May 2005 on the Bombardier CRJ700; the existing CRJ1000 family relationship remains separate from this propulsion identity.
Identity
- Aliases
- CF34-8C5B1General Electric CF34-8C5B1GE CF34-8C5B1CF34-8C5B1 turbofan
- Domains
- aviation
- Identity Level
- variant
- Kind
- turbofan
- Name
- General Electric CF34-8C5B1
- Status
- active
Details
- Air Breathing Specs
- Bypass Ratio
- 5
- Max Thrust
- …
- Overall Pressure Ratio
- 28
- Sea Level Static Thrust
- …
- Description
- General Electric CF34-8C5B1 exact turbofan variant in the CF34-8 series. EASA rates normal five-minute takeoff thrust at 59.36 kN (12,670 lbf), maximum takeoff thrust at 61.34 kN (13,790 lbf), and maximum continuous thrust at 59.06 kN (13,280 lbf). GE identifies the -8C5B1 as a derated CF34-8C5 configuration with a 5:1 bypass ratio and 28:1 overall pressure ratio, entering service in May 2005 on the Bombardier CRJ700; the existing CRJ1000 family relationship remains separate from this propulsion identity.
- Developers
- Family
- Manufacturers
- Service Entry Date
- 2005-05
Links
Assets & Meta
- Creation Time
- August 13, 2026 at 07:35:26 UTC
- Updated Time
- August 21, 2026 at 14:53:39 UTC
Other
- Sources
- Accessed Date
- 2026-08-13
- Note
- EASA CF34-8 series TCDS lists CF34-8C5B1 as a distinct approved model.
- Publisher
- European Union Aviation Safety Agency
- Title
- EASA.IM.E.053 — CF34-8 series engines
- Accessed Date
- 2026-08-13
- Note
- GE Aerospace identifies CF34-8C5B1 as the derated CF34-8C5 variant powering Bombardier CRJ700 and Challenger 870 applications.
- Publisher
- GE Aerospace
- Title
- CF34-8C Datasheet
- Accessed Date
- 2026-08-21
- Note
- EASA TCDS IM.E.053 lists CF34-8C5B1 ratings of 59.36 kN (12,670 lbf) normal five-minute takeoff, 61.34 kN (13,790 lbf) maximum takeoff, and 59.06 kN (13,280 lbf) maximum continuous thrust.
- Publisher
- European Union Aviation Safety Agency
- Title
- EASA.IM.E.053 — CF34-8 series engines
- Accessed Date
- 2026-08-21
- Note
- GE's CF34-8C datasheet identifies the -8C5B1 as a derated -8C5 configuration, gives a 5:1 bypass ratio and 28:1 overall pressure ratio, and records May 2005 entry into service.
- Publisher
- GE Aerospace
- Title
- CF34-8C Turbofan Propulsion System Datasheet
- Accessed Date
- 2026-08-21
- Note
- GE identifies CF34-8C5B1 as a production-standard CRJ700 configuration and describes its common CRJ700/CRJ900 application.
- Publisher
- GE Aerospace
- Title
- GoJet Airlines to be First U.S. Operator of CF34-8C5B1 Engine