Many Have Wondered About the RV-12 Plans Revisions and What is Required

From a post from Van's on April 14, 2009.

PLANS REVISION SYSTEM
This is probably a good place to remind RV-12 builder how the plans memo/revision system works. RV-12 changes will be posted on our website.

• CHANGE MEMOS note insignificant spelling/wording changes to drawings that will not affect the aircraft at all. Memos will NOT show a revision level change in the drawing title block. Dates, however, will change.
• CHANGE NOTICES may reflect changes in hardware callouts, dimensional changes, additional instructions, etc. that affect construction. Change Notices WILL show a revision level change in the drawing title block as well as a date change.
• SERVICE BULLETINS define required changes to the aircraft. Drawings, parts and methods will be defined and available to enable builders to comply. This may include both revisions to existing drawings and new drawings, as necessary.

It’s up to the builder to check our website frequently. Go to the opening page, click on Service Information/Revisions, scroll down to the bottom of the page and click on page 2.

• If you find a drawing with a later date or a higher revision number than the one you have, and it shows a portion of construction that you have not already accomplished, simply print out the new drawing and destroy the old one. There’s no need to keep track of exactly what changed. (Don’t have printer that can handle 11x17 paper? Your friends down at the all-night copy shop do, and they can open our web-based file right from the store.)
• If you find a drawing with a later date or higher revision number than the one you have, and it shows a portion of construction you have already accomplished, there is NO REQUIREMENT to re-do any step of construction to conform with a revision.
• If we determine that there is some reason that an accomplished construction step must be re-done, we will issue a Service Bulletin detailing the required steps and/or parts.