Aerospace Garage

Engines · CFM International

LEAP-1A

Category
Engines
Manufacturer
CFM International
Country
France / United States
Programme status
verified
Last verified
6 Sept 2026

The LEAP-1A is a high-bypass turbofan engine developed by CFM International, a 50/50 joint venture between GE Aerospace and Safran Aircraft Engines (Safran SA). It serves as the successor to the CFM56 series, incorporating ceramic matrix composites and 3D-printed fuel nozzles to improve thermal efficiency and fuel burn. The engine was designed specifically to power the latest generation of narrow-body commercial aircraft, focusing on reduced carbon emissions and noise profiles compared to legacy powerplants. Primary buyers are commercial airlines and global aircraft leasing firms who operate the Airbus A320neo family. It is sold either as part of a direct airframe purchase or through long-term Flight Hour Services agreements. Major operators include Indigo, American Airlines, and EasyJet. The engine competes directly with the Pratt & Whitney PW1100G-JM, maintaining a significant share of the A320neo market due to its conventional architecture and high dispatch reliability. The Garage desk notes that while the engine avoids the geared architecture risks of its competitor, it has faced its own durability challenges in harsh environments, particularly regarding high-pressure turbine shroud degradation. Buyers should verify the current status of service bulletins related to the Reverse Bleed System and monitor the availability of MRO slots, as global shop capacity remains constrained. We would also confirm the specific thrust rating configuration, as this is software-defined to match the specific A320, A321, or A319 airframe requirements.

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