CFM International Secures FAA and EASA Approval for LEAP-1B Engine Durability Upgrades

CFM International announced on Saturday it has received certification from U.S. and European regulators for key durability upgrades to its LEAP-1B aircraft engine. The enhancements are designed to significantly extend the engine's operational life, particularly for airlines operating in harsh environments.

Regulatory Approvals

CFM, a 50-50 joint venture between GE Aerospace (NYSE:GE) and Safran Aircraft Engines (EPA:SAF), secured approval from two key aviation authorities:

• The U.S. Federal Aviation Administration (FAA) and the European Union Aviation Safety Agency (EASA) certified a new high-pressure turbine (HPT) durability kit for the engine.
• The company also received initial engine-level certification for its reverse bleed system, a cooling technology intended to lower maintenance needs.

These upgrades aim to bring the LEAP-1B's servicing requirements closer to those of its predecessor, the widely used CFM56 engine.

Impact for Airlines

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The primary goal of the upgrades is to double the engine's time on wing, which refers to the period an engine can operate on an aircraft before needing a major overhaul. This is particularly beneficial for carriers in demanding climates, such as those in the Middle East and India, where heat and airborne particulates can accelerate engine wear.

According to CFM Chief Executive Gaël Méheust, the enhancements will extend the interval between shop visits and reduce maintenance costs for airline operators. The reverse bleed system is specifically designed to reduce the frequency of fuel nozzle replacements.

Production and Context

CFM stated that production of the upgraded hardware is now being industrialized, with a full production rollout anticipated in early 2027. The certification for the LEAP-1B follows a similar upgrade program for the LEAP-1A engine family.

For the LEAP-1A fleet, approximately 70% of engines are now equipped with the reverse bleed system, and roughly 40% have the HPT durability kit installed, according to the company.