CF34-10

Overview

The GE Aerospace CF34-10 is the largest and most powerful member of the CF34 turbofan family, designed to power Embraer's larger E-Jet variants — the E190 and E195 — which seat up to 114 passengers in a typical dual-class layout. The CF34-10 bridges the gap between the regional jet engine segment and the narrowbody turbofan category, sharing thrust levels approaching those of earlier-generation CFM56 and V2500 installations.

With 82.3 kN (18,500 lbf) of thrust and a 1.346-meter fan diameter, the CF34-10 is physically and performance-wise a different engine from its CF34-3 and CF34-8 predecessors, despite sharing the family name and some architectural DNA. It incorporates an advanced three-stage booster and a higher-efficiency high-pressure compressor that significantly improves fuel burn relative to earlier CF34 variants.

Technical Specifications

Variants

The CF34-10 is produced as the CF34-10E for the Embraer E190/E195 platform:

• CF34-10E5: Baseline production variant producing 78.2 kN (17,575 lbf) for the E190. FAA and ANAC certified in 2004. The E5 designation indicates the fifth member of the CF34-10 sub-family.
• CF34-10E6: Higher-thrust variant producing 82.3 kN (18,500 lbf) for the E195 and high-gross-weight E190 variants. Features enhanced turbine cooling and improved combustor efficiency for better hot-and-high performance.

Parts commonality between the -10E5 and -10E6 exceeds 85%, and both variants share maintenance schedules and overhaul intervals, simplifying fleet management for operators of both aircraft types.

Aircraft Applications

The CF34-10 is the sole engine for Embraer's 100-seat-plus regional jets:

• Embraer E190 — Entered service with JetBlue Airways in March 2005 as the launch customer. The E190 seats 98–114 passengers in a distinctive 2-2 wide-body-like layout that eliminates middle seats. JetBlue grew its E190 fleet to over 60 aircraft, using them for thinner transcontinental routes. Other major operators include Air Canada, Azul, and LATAM.
• Embraer E195 — The largest first-generation E-Jet, stretching to seat up to 122 passengers. Entered service with Flybe (United Kingdom) in 2006. The E195 positioned Embraer directly against the Airbus A319 on thin narrowbody routes. Despite modest initial sales, the platform found success with Azul and TAM in Brazil, which appreciated the 2-2 seating's passenger appeal on domestic routes.

Development History

Embraer's decision to pursue the 100-seat E190/E195 variants required an engine substantially more powerful than the CF34-8 used on the E170/E175. GE initiated the CF34-10E development in 2001, with the program benefiting from concurrent advances in computational fluid dynamics and materials science. The new three-stage booster and redesigned high-pressure compressor added meaningful complexity but delivered the efficiency improvements Embraer needed to make the E190's direct operating costs competitive with the A319.

The CF34-10E's first run occurred in 2003, and the E190 received its type certificate in December 2004. JetBlue placed the E190 into revenue service in March 2005 — a remarkably fast certification and entry-into-service timeline that demonstrated the maturity of both Embraer's program management and GE's engine development process.

With the E190-E2 and E195-E2 powered by Pratt & Whitney PW1900G GTF engines, new CF34-10 production has concluded. However, the installed base of roughly 600 E190 and E195 aircraft continues to operate globally, and the CF34-10 will remain in active service and MRO through the mid-2030s.