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CFM56-5B/-7B
CFM56-5B/-7B

CFM56-5B/-7B

Brand:MTU Aero Engine Model:CFM56

The CFM56 engine family comprises five different models covering the thrust classes from 18,500 to 34,000 pounds. CFM56 engines are used in the twin-engine Airbus A320 family, in the first generation of the A340-200/-300 long-haul jet, and in the Boeing 737 Classic and 737 Next Generation. With more than 30,000 engines delivered and around 550 customers worldwide, the CFM56 is the leading engine used in passenger aircraft.

These engines are manufactured and marketed through a 50/50 cooperation between GE Aerospace and the French engine manufacturer Safran Aircraft Engines.


The CFM56 engine family comprises five different models covering the thrust classes from 18,500 to 34,000 pounds. CFM56 engines are used in the twin-engine Airbus A320 family, in the first generation of the A340-200/-300 long-haul jet, and in the Boeing 737 Classic and 737 Next Generation. With more than 30,000 engines delivered and around 550 customers worldwide, the CFM56 is the leading engine used in passenger aircraft.

These engines are manufactured and marketed through a 50/50 cooperation between GE Aerospace and the French engine manufacturer Safran Aircraft Engines.

MTU’s involvement in the CFM56

The CFM56-5B is maintained at MTU Maintenance Zhuhai. Support for the CFM56-7B is provided by MTU Maintenance Berlin-Brandenburg and MTU Maintenance Zhuhai.


Overview of maintenance capabilities

Frequently Asked Questions

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    The lead time for gas turbine overhaul services ranges from 6 to 14 weeks, depending on the damage assessment, parts availability, and whether hot-section repairs are required. Expedited options may reduce this by 30%.
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    Yes, we retrofit legacy systems (e.g., GE Frame 5, Siemens V94.2) with modern digital controllers, typically completing hardware integration within 4-8 weeks. Software migration requires additional validation time.

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    We recommend annual performance testing under ISO 3977-2 standards. Critical applications (e.g., offshore platforms) may require semi-annual tests with emissions compliance checks.

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    All rad-hard devices (e.g., FPGA, ADC) are QML Class V certified under MIL-PRF-38535 and tested to MIL-STD-883 Method 1019 for SEU tolerance. Full qualification reports are available upon request.

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    Our ASICs and power management ICs operate across -55°C to +175°C ambient temperatures, with derating curves provided in military temperature range (MTR) datasheets.

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    Our PMA parts (e.g., actuators, sensors) hold FAA/EASA Form 1 certification and match OEM form/fit/function. Installation requires SB/MB documentation per FAA AC 23.1529.

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    All NAS/MS fasteners include full DNA traceability: melt source (AMS 2301), heat/lot numbers, and AS9100-compliant MTRs with ultrasonic test reports.

  • How do you handle urgent AOG (Aircraft on Ground) requests?

    AOG orders ship within 4 hours for stocked items (FAA-PMA, EASA Part 21G). Non-stock critical parts trigger priority manufacturing with 72-hour max turnaround.

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