Karl Polifka
  • Williamsburg, VA
  • United States
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Have already built an airplane
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USAF retired

Karl Polifka's Blog

FAA inspection

Posted on January 6, 2010 at 10:31am 2 Comments

Is there any requirement for FAA to inspect/approve the installation of the modification kit on an experimental-built XL?

6-ZU-3 doubling rivets

Posted on November 26, 2009 at 11:26am 0 Comments

Looking at 6-ZU-3, I am a bit uncertain how far out to double rivets on the front and rear spars. Additionally, would it be a good idea to drill those new rivet holes prior to removing the skin so there would be better positioning and better clean up. Any thoughts?

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