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CFM56-5B4/2 ✕ CFM56-5A3 ✕
Family CFM56-5B CFM56-5A
EASA ID 2CM018 1CM009
Aircraft Engine Manufacturer CFM International CFM International
Aircraft Engine Type Turbofan Turbofan
Comment Airbus A318, A319, A320, A321 Airbus A319, A320
Dry Weight (kg) 2381 2266
Diameter (mm) 1735 1735
Max Rotating Diameter (mm) 1735 1735
Length (mm) 2601
Wikipedia Article (URL) en.wikipedia.org/wiki/CFM_International_CFM56 en.wikipedia.org/wiki/CFM_International_CFM56
Fuel Jet A Jet A
Fan Blades 36
Geared Fan No No
Low-Pressure Compressor Stages 4
High-Pressure Compressor Stages 9
Combustion Chamber DAC
High Pressure Compressor Stages 1
Low-Pressure Turbine Stages 4
Afterburner No No
Streams 2 2
Bypass Ratio 5.7 6
Overall Pressure Ratio 27.1 27.9
Maximum Takeoff Thrust (kN) 117.9 117.88
Hydrocarbon Take Off (g/kg fuel) 0.1 0.2
Hydrocarbon Climb Out (g/kg fuel) 0.1 0.2
Hydrocarbon Approach (g/kg fuel) 11.4 0.3
Hydrocarbon Idle (g/kg fuel) 2.2 1.3
Hydrocarbon Unitary Average (g/kN) 11.2 2.3
Hydrocarbon Unitary Sigma (g/kN) 0.5
Hydrocarbon Unitary Range (g/kN) 10.4-12 1.8-2.8
Hydrocarbon Unitary Characteristic (g/kN) 14.6 3.5
Hydrocarbon Unitary Characteristicto Regulatory (% of limit) 74.5 18.1
Hydrocarbon LTO (g) 1350 268
Carbon Monoxide Take Off (g/kg fuel) 1.6 0.9
Carbon Monoxide Climb Out (g/kg fuel) 4.9 0.9
Carbon Monoxide Approach (g/kg fuel) 43.8 2.4
Carbon Monoxide Idle (g/kg fuel) 37.1 16.2
Carbon Monoxide Unitary Average (g/kN) 93.5 25.1
Carbon Monoxide Unitary SD (g/kN) 0.6
Carbon Monoxide Unitary Range (g/kN) 87.6-99.3 24.2-25.5
Carbon Monoxide Unitary Characteristic (g/kN) 106.5 30.8
Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) 90.3 26.1
NOx Take Off (g/kg fuel) 16.61 26.4
NOx Climb Out (g/kg fuel) 12.58 21.1
NOx Approach (g/kg fuel) 6.13 8.3
NOx Idle (g/kg fuel) 4.49 4.1
NOx Unitary Average (g/kN) 31.5 43.4
NOx Unitary SD (g/kN) 0.7
NOx Unitary Range (g/kN) 31-31.9 42.7-44.2
NOx Unitary Characteristic (g/kN) 34.6 50.3
NOx Unitaryto Standard (% of limit) 36.7 52.5
NOx Unitaryto CAEP2 (% of limit) 45.9 65.6
NOx Unitaryto CAEP4 (% of limit) 55.5 79
NOx Unitaryto CAEP6 (% of limit) 63.1 89.8
NOx Unitaryto CAEP8 (% of limit) 75.2 106.7
NOx LTO (g) 3783 5110
Smoke Take Off (SN) 0.5 16.8
Smoke Climb Out (SN) 0.5 14.6
Smoke Approach (SN) 2.3 4.8
Smoke Idle (SN) 3.5 2.7
Smoke Max (SN) 4.75 16.8
Smoke Sigma (SN) 2
Smoke Range (SN) 4.5-5 14.6-18.8
Smoke Characteristic (SN) 5.6 21.6
Smoke Characteristicto Regulatory (% of limit) 24.8 95.6
Fuel Flow Take Off (kg/s) 1.18 1.131
Fuel Flow Climbout (kg/s) 0.975 0.925
Fuel Flow Approach (kg/s) 0.335 0.307
Fuel Flow Idle (kg/s) 0.121 0.1044
Fuel LTO (kg) 447 406
Fuel Venting Compliant No No
Carbon Monoxide LTO (g) 11234 2968
Compressor Description 1 fan, 4-stage LP, 9-stage HP
Emissions Data Status C C
Engine Status Out of production Out of production
Turbine Description 1-stage HP, 4-stage LP