General Aviation Modifications, Incorporated’s George Braly announced in a seminar today that Vitol (a commodities trading company) has brewed 1 million gallons of GAMI’s G100UL, 100-octane unleaded aviation fuel, stored in a tank at its Baton Rouge plant. More importantly, according to Braly, the fuel, after testing, received a COA, a certificate of authenticity, which then makes it “commercially viable.” With this announcement, Braly and GAMI hope to counter the critics that say while the fuel has received FAA approval for use under the STC process, it’s not commercially viable. The term is important because of a consent decree taken in California that could force the changeover to an unleaded fuel when an alternative to 100LL becomes “commercially viable”
In Case You Missed It
Simplified One-Off Electronic Projects
Tom Kuffel - 0
As homebuilders, we are accustomed to doing a lot of preliminary and/or tooling work to build a couple of pieces for our aircraft. Tom Kuffel created an auxiliary fuel transfer pump controller for his GlaStar Sportsman for next to nothing, a real savings over the retail price of $300, and he describes how he did it.
Here Comes the Judge
How do aircraft judges at the big annual events evaluate a potential prizewinner? You might be surprised. By Bill Repucci.
University of Rotax
One builder’s lessons to learn before maintaining a Rotax 914.
All About Avionics
Stein Bruch - 0
Having worked with a variety of products from various manufacturers, author Stein Bruch has a lot of wisdom on the ins and outs of electronic flight instrument systems (EFISes) for homebuilts. He dispenses those smarts here, and offers tips on what to consider when making this important avionics decision, including such items as compatibility, reliability, value and ease of installation.











