The CF6-80C2 variant took the proven CF6 architecture and refined it for the 1980s widebody generation. With a 14-stage high-pressure compressor and integrated front fan driven by a five-stage low-pressure turbine, it balanced fuel efficiency with the thrust levels airlines needed for transoceanic twins and quad-jets alike.
CF6-80C2 Architecture and Ratings
The primary subject of this technical guide focuses on the General Electric CF6-80C2 engine, engineered specifically for High-Bypass Turbofan applications. Below is an essential digest of this powertrain configuration.
• CF6 family’s definitive widebody variant
• 51,950–60,070 lbf takeoff thrust
• Powered 747-400 and 767
• 14-stage HP compressor
CF6-80C2 Technical Data Sheet
Takeoff thrust ranges from 51,950 lbf (CF6-80C2B2) to 60,070 lbf (CF6-80C2B6); dry weight approximately 9,790 lb; dual-rotor axial-flow configuration.
The CF6-80C2’s core layout—14-stage HP compressor, two-stage HP turbine, and a front fan integrated with the low-pressure compressor—was a direct evolution of the CF6-6 and CF6-50 families. What changed was the aerodynamic refinement: better blade profiles, tighter clearances, and improved materials that pushed efficiency without a fundamental redesign. The engine became the standard powerplant for the Boeing 767 and powered later 747 variants.
| Type | Dual-rotor, axial-flow high-bypass turbofan |
|---|---|
| HP Compressor | 14 stages |
| HP Turbine | 2 stages |
| LP Turbine | 5 stages |
| Takeoff Thrust (B2) | 51,950 lbf |
| Takeoff Thrust (B6) | 60,070 lbf |
| Dry Weight | 9,790 lb |
| Fuel | Jet A / Jet A-1 |
Aircraft Powered by the CF6-80C2
This engine model is deployed across various operational frameworks. Here is a breakdown of the typical machine or vehicle applications using this unit:
Boeing 747-400, Boeing 767, Airbus A300-600, McDonnell Douglas MD-11
Pros & Advantages
Proven CF6 reliability lineage; thrust range suitable for multiple widebody classes; strong dispatch record in service.
Cons & Disadvantages
Older technology than GEnx successors; higher fuel burn than modern engines; maintenance costs increase with age.
Frequently Asked Questions (FAQs)
Q1: What does the “C2” designation mean on the CF6-80C2?
A1: The C2 suffix identifies a specific CF6-80 variant with improved performance and durability features compared to earlier CF6-80A models. It became the most widely used CF6-80 series.
Q2: How much thrust does the CF6-80C2B6 produce?
A2: The -B6 variant is rated at 60,070 lbf takeoff thrust at sea level static conditions.
Q3: Which Boeing aircraft used the CF6-80C2?
A3: The Boeing 747-400 and Boeing 767 both flew with CF6-80C2 engines as a primary engine option.
The CF6-80C2 remains supported for military and cargo operators, though new civil widebody production has transitioned to newer engine families.