COMMERCIAL AIRCRAFT ENGINES
CFM56-5C
COMMERCIAL AIRCRAFT ENGINES
CFM56-5C
Most powerful engine in the The CFM56-5C is a cost-effective propulsion system a second generation electronic engine control unit
CFM56 family exclusively and perfectly tailored to the Airbus (FADEC),
Industrie A340-200 and A340-300 needs, ranging a new four-stage booster to further increase
High thrust-to-weight ratio from 31,200 to 34,000 pounds in takeoff thrust. core flow while maintaining moderate turbine
The most powerful engine in the CFM56 family, it temperatures.
Quietest engine in its thrust class was certified in December 1991, both by the US
Federal Aviation Administration (FAA) and the By combining a high by-pass ratio and a noiseefficient
Over 1,000 engines into service,
French Direction Gnrale de lAviation Civile (DGAC) long duct nacelle with mixer, the CFM56-5C powering
which have logged over 33 authorities. the Airbus A340 offers one of the lowest noise
million flight hours signatures in commercial service. This propulsion
The CFM56-5C entered into service in 1993 expanding system also provides both reduced fuel burn at
the range of CFM International engines beyond short- cruise conditions and high climb thrust. Lastly, the
to-medium range missions into long-haul wide body CFM56-5C demonstrates an impressive dispatch
aircraft applications. reliability rate of nearly 99.90 percent.
The CFM56-5C continues the CFM56 familys
reputation for reliability and robustness, meeting To maximize overall performance and profitability for
existing environmental requirements with significant airlines, CFM International offers the CFM56-5C as a
margins. The CFM56-5C features innovative total propulsion system: engine, nacelle and exhaust
state-of-the-art technologies with proven design systems.
enhancements mainly characterized by:
a highly efficient and FOD resistant fan of 72.3
inch diameter incorporating threedimensional (3D)
aerodynamic design,
ENGINE FEATURES
-5C2 -5C3 -5C4
Max. takeoff thrust (lb) 31,200 32,500 34,000
Bypass ratio 6.60 6.50 6.40
Flat rate temperature (F) 86 86 86
(30 C) (30 C) (30 C)
Max. climb thrust (lb)
35 000 ft Mach 0.8 ISA
Engine installed 7,585 7,585 7,838
Overall pressure ratio
at max. climb 38.30 38.30 39.20
Length (in) 103 103 103
Fan diameter (in) 72.30 72.30 72.30
Applications A340-200 A340-200 A340-200
A340-300 A340-300 A340-300
PROGRAM MILESTONES
1987 1989 1990 1991 1993 1994 1995 1996
October: Airbus December : First August: First flight December: February: A340/ May: A340/ March: A340/ April: CFM56-5C
A340 program engine to test on 707 FTB CFM56-5C2& -5C3 CFM56-5C2 entry CFM56-5C3 entry CFM56-5C4 entry into service
launch certification into service into service entry into service on the 271 tons
A340-300
November: October:
A320/CFM56-5B CFM56-5C4
certification certification
Snecma - Direction de la Communication - Mars 2011
CFM, CFM56, LEAP, LEAP56, and the CFM logo are trademarks of CFM International,
a 50/50 joint company between Snecma (Safran group) and GE.
Snecma
10, alle du Brvent - CE1420 Courcouronnes
91019 Evry Cedex - France
Tel: + 33 (0)1 69 87 09 00 - Fax: + 33 (0)1 69 87 09 02
www.snecma.com
