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New Timeline Projected for MOSAIC Final Rule

Here's when the new regulation affecting all aircraft with special airworthiness certificates is expected, according to an EAA official.

A wide range of light aircraft and the pilots that fly them will be positively affected by the implementation of MOSAIC. [Credit: Sling Aircraft]
A wide range of light aircraft and the pilots that fly them will be positively affected by the implementation of MOSAIC. [Credit: Sling Aircraft]
Gemini Sparkle

Key Takeaways:

  • The final rule for the Modernization of Special Airworthiness Certification (MOSAIC) is now anticipated in early to mid-2025, missing the previously suggested announcement at EAA AirVenture this year.
  • Reasons for the delay include a tight timeline following the comment period, a required 30-day reopening of comments due to an omission, and the upcoming election diverting government resources.
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The final rule on the Modernization of Special Airworthiness Certification (MOSAIC) is now expected sometime in 2025.

When the comment period closed for the MOSAIC Notice of Proposed Rulemaking (NPRM) in January, it was suggested that the final rule might be announced at EAA AirVenture in Oshkosh, Wisconsin, in late July, but that is no longer the expectation.

Russ Niles

Russ Niles is Editor-in-Chief of AVweb. He has been a pilot for 30 years and joined AVweb 22 years ago. He and his wife Marni live in southern British Columbia where they also operate a small winery.

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