4 Aug 2025

✈️FAA Issues Special Conditions for LEAP-1B Engine Compliance

Special Conditions: CFM International, LEAP-1B Engine Model; Incorporation of Woven Composite Fan Blades

Summary

This action amends Special Condition No. 33-017-SC for the CFM International (CFM) Model LEAP-1B engines. These engines have a novel or unusual design feature associated with the engine fan blades-- incorporation of woven composite fan blades. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions, as amended, contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

Agencies

  • Transportation Department
  • Federal Aviation Administration

Business Impact ?

$$$ - High

The regulation impacts compliance and regulatory requirements for aircraft engine manufacturers, particularly regarding safety standards for novel designs like woven composite fan blades. Non-compliance risks legal and financial penalties.

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