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By Bill Freeman EAA #148597, Reprinted from the 1981 EAA Designee Newsletter
Technical Tips Manual Vol 2

In the aircraft community the term "metal fatigue" is often used without any explanation, usually in reference to some part which has failed an inspection or perhaps a part which has failed in service.

Some self-styled authorities will say that the metal "crystallized," which caused it to crack. You may envision the metal somehow getting "tired" and failing, and in some older aircraft it might seem…

Tim Dahnke will be joining the IAC team on Monday, March 4 as the new IAC Executive Director.  He will have responsibility over all IAC operations, including managing events such as the IAC presence at AirVenture and the U.S. National Aerobatic Championships. In the role, he will enjoy interacting with the IAC Board of Directors and building support for the IAC membership and IAC chapters while continuing to grow the relationship between IAC and EAA.

Tim is a Wisconsinite. He and his wife Roxy currently reside in Oshkosh, Wisconsin. Aviation has always been a part of Tim’s life. He…

In 1970, Verne was one of the earliest members of the IAC having joined in the first few weeks of the club…

 The 2024…

At their meeting in Oshkosh, Wisconsin on November 11-12, the IAC board of directors approved the recommend Known Compulsory sequences for both power and glider categories for the 2024 contest season.

The sequences attached at the bottom of this page were prepared by the sequence committee. The committee recommended using the same Primary Known from last year. 

All Sequences went through the 30-day member comment period and although there were very few comments (6 total with only 2 having recommendations and 4 being complementary of the sequences), recommendations were fully…

"The Leo" - National Point Series Championship
By Bob Freeman, IAC 8532

      IAC Collegiate Program Chair, Nina Stewart, offers her congratulations to the winners of the 2023 Collegiate Championships. The collegiate eagle trophies will be presented to the recipients at the IAC Member Gathering in Oshkosh, Wisconsin at AirVenture on Friday, July 26, 2024. The results of the championships have been verified and are as follows:

Team Championships:
1st - University of North Dakota, Scoring 8438.16 out of 9690.00 points / 87. %

The 2024 edition of the IAC Contest Rules is now available to members at: 
www.iac.org/download-contest-rules  

Most of the changes are a direct result of your input.  Forty-six proposals were submitted by members. After these were published last fall, other members provided valuable comments.  The Rules Committee discussed each proposal and associated comments in depth, then provided recommendations to the IAC Board of…

The final scores have been tabulated for the 2023 Regional Series Competition. Seventy-seven (77) pilots successfully competed at three or more contests needed to qualify in their respective region.

The IAC awards first, second, and third-place titles in all categories in each of six regions. Each pilot flies a three-contest minimum with the Nationals as a wild-card. The average of the three best contests flown in a region are used to arrive at a total percentage.

MidAmerica: 
Primary: 1st Justin Miller 
Sportsman: 1st Tim Taylor, 2nd Kelly Fawcett…

Stephen Kurtzahn, IAC Executive Director, will be leaving the EAA/IAC team on January 31, 2024. 

Stephen has answered the call to return as pastor within the Wisconsin Evangelical Lutheran Synod. Previous to coming into the IAC job, he had served in pastoral ministry for 36 years and is responding to a tremendous need for pastors in his denomination.

In a letter to the IAC Board of Directors, Stephen expressed his appreciation to them in hiring him in October of 2019. “This has been a great place to work, with many wonderful and professional people. It has indeed…