There are two types of Revisions made to Sonex Aircraft Plans: Required Revisions and Optional Revisions. Builders should check this page periodically for new revisions.

Required Revisions:
These are revisions that have a direct impact on the construction process. It is very important you make these revisions to your plans immediately.

Optional Revisions:
These are revisions that are mainly drawing clean-up and note changes. They do not directly impact the construction process.

Note: Some of these revisions may already be made on your plans, depending upon when your plan set was printed. The Revision Block on each page of your plans details revisions already reflected in your set of plans. For an example revision block and explanation of its use, download the sample plan sheet (PDF)*.

Reporting Errors:
Please notify Sonex Aircraft, LLC of any drawing errors at: 920-230-TECH (8324) or by e-mail at:
tech@sonexaircraft.com

*Download Adobe Acrobat Reader to view Sonex PDF files.