CFM56-3 General
Engine Type
CFM56-3
Type
Turbofan Engine
Manufacturer
CFM
CFM56-3 Program Milestones
Initial Development Contract
March 1981
First Engine To Test (FETT)
April 1982
Flight Test on 707
January 1983
CFM-56-3 Certification
January 1984
737-300 Entry into service
December 1984
737-400 Entry into service
September 1988
737-500 Entry into service
March 1990
Final Production Engine
December 1999


CFM56-3 (All Versions) Dimensions
Length
93.0 inch
Fan Diameter
60.0 inch
Basic Dry Weight
4,276 lb




CFM56-3

The CFM56-3 turbofan engine is the first advanced derivative of the CFM56 family and is perfectly tailored to meet the needs of second-generation, short- to medium-range aircraft like the Boeing 737-300/-400/-500. The engine was certified by the FAA and DGAC in January 1984 and covers a thrust range of 18,500 to 23,500 pounds, thereby offering a fuel burn efficiency improvement of 20 percent compared to previous low-bypass engines.

The CFM56-3 is quiet and clean by design and was built around the service-proven CFM-56-2 core. The engine averages on-wing time of 18,000 hours or 12,000 cycles before first removal for servicing is executed. Furthermore, a growing number of CFM56-3 engines have accumulated over 30,000 flight-hours without a shop visit, setting a new standard for reliability in commercial aviation.

 


Ansett Australia Boeing 737-300
Lufthansa Boeing 737-300
Southwest Airlines Boeing 737-300
Examples of aircraft that are powered by the CFM56-3

CFM56-3 Performance

Take-off Conditions (Sea Level)
CFM56
-3-B1
-3B-2 -3C-1
Max Take-off (lb)
20,000
22,000
23,500
Airflow (lb/sec)
638-655
683
638-710
Bypass Ratio
6.0
5.9
6.0

In-Flight Performance (35,000 ft-Mach=0.80-ISA)
CFM56 -3-B1 -3B-2 -3C-1
Max Climb Thrust (lb)
4,860
5,260
5,540
Overall pressure ratio
27.5
28.8
30.6
Max Cruise Thrust
4,650
5,040
5,370

Application
CFM56 -3-B1 -3B-2 -3C-1
Aircraft
 
 

A 737 Powered by a CFM56 turbofan engine