FAA Crafts Extra Rules for Woven Fan Blades in LEAP Engines
Published Date: 8/4/2025
Rule
Summary
CFM International’s LEAP-1A and LEAP-1C engines are getting a cool upgrade with woven composite fan blades, which are new and different. Since current safety rules don’t fully cover this design, special safety standards are being added to keep everyone safe. This change affects engine makers and users, ensuring top safety without extra costs or delays.
Analyzed Economic Effects
1 provisions identified: 1 benefits, 0 costs, 0 mixed.
New safety rules for woven fan blades
The FAA amended special conditions for CFM International Model LEAP‑1A and LEAP‑1C engines that incorporate woven composite fan blades. Because current airworthiness rules do not fully cover this new blade design, the amendment adds additional safety standards to ensure a level of safety equivalent to existing standards. The summary states this change affects engine makers and users and is intended to keep safety high without adding costs or delays.
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