• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
General Aviation NewsGeneral Aviation News

General Aviation News

Because flying is cool

  • Pictures of the Day
    • Submit Picture of the Day
  • Stories
    • News
    • Features
    • Opinion
    • Products
    • NTSB Accidents
    • ASRS Reports
  • Comments
  • Classifieds
    • Place Classified Ad
  • Events
  • Print Archives
  • Subscribe
  • Show Search
Hide Search

100LL

STC in the works for G100UL

By Janice Wood · September 11, 2014 ·

While the government begins its testing of four potential 100LL replacements, George Braly and Tim Roehl of General Aviation Modifications Inc. in Oklahoma just finished up yet another test of their unleaded 100-octane avgas — G100UL — at Embry-Riddle Aeronautical University. The fuel underwent flight testing and engine block testing in one of the school’s […]

DeltaHawk unveils diesel engine for certified aircraft

By Meg Godlewski · September 2, 2014 ·

If avgas, also known as 100LL, disappeared tomorrow, what would you use to power your airplane? The folks at DeltaHawk Engines have an answer to that: A diesel engine designed for aviation. During AirVenture the company showed off the new design mounted in a Cirrus SR20. The Cirrus is the proof-of-concept model and during the show […]

US House Committee fuels future of unleaded avgas

By General Aviation News Staff · May 26, 2014 ·

The U.S. House Appropriations Committee last week approved funding to support continued research into the transition to unleaded avgas for piston-engine aircraft. According to a report on the National Business Aviation Association website, the appropriation was part of the larger fiscal year 2015 Transportation, Housing and Urban Development funding bill, which was approved on a […]

Airworthy Autogas to produce unleaded gasoline for aviation

By Ben Sclair · May 22, 2013 ·

PHOENIX, Ariz. – Airworthy AutoGas, LLC will produce and distribute Airworthy AutoGas, a high purity, low vapor pressure, ethanol-free, 93 octane, premium unleaded automotive gasoline, beginning in the Fall of 2013. “A growing number of General Aviation aircraft do not require 100LL AVGAS, or a 100 octane unleaded drop-in replacement. That, coupled with the scarcity of […]

GAMI’s search for an avgas alternative

By Ben Visser · August 1, 2012 ·

Recently, my wife and I decided to take a road trip to Texas to visit friends and fill up on good Cajun and Tex-Mex food. On our return, I stopped to visit GAMI — General Aviation Modifications, Inc. — in Ada, Oklahoma. GAMI builds and sells a line of parts designed to improve performance for […]

Our fuels expert visits Swift Fuels

By Ben Visser · March 5, 2012 ·

Swift Fuels has been working on a 100 octane unleaded avgas for a number of years. I have been, shall we say, less than enthusiastic about the company’s work for various reasons. However, as of late, the company seems to be making some real progress, so I drove down to Indiana to visit its facility. […]

Connecting flights

By Ben Sclair · December 21, 2011 ·

The end of the year is a time of reflection. As 2011 winds down, my family and I experienced an unreal 19-day stretch that put a great deal into perspective about life and aviation. Here’s a peek into a public journal: Nov. 10: My wife, Deb, and I were in the Indianapolis International Airport when […]

Oil giant pulls out of 100LL business

By Ben Visser · December 19, 2011 ·

UPDATE: Calls from AOPA and EAA Tuesday morning inform us Ben’s column is incorrect. Exxon-Mobil will continue the manufacture of unbranded 100LL fuel. Exxon-Mobil will discontinue branded fuel sales under the Exxon Avitat flag. We are awaiting confirmation from Exxon’s public relations people. I recently read that Exxon-Mobil stopped manufacturing and selling 100LL. (I tried […]

Mogas for the masses — if you dare

By Jamie Beckett · September 22, 2010 ·

Jamie Beckett is a CFI and A&P mechanic who stepped into the political arena in an effort to promote and protect GA at his local airport. Prepare yourself for a blatant plug. I’m going to suggest you click on a link that will take you to a General Aviation News blog post on the topic […]

« Previous Page

Primary Sidebar

Read the Latest Issue

Cover of the August 20, 2026 edition of General Aviation News
August 20, 2026

Featured Video

https://youtu.be/_5GlVdS1gpo?si=PEX8RGgp1XCz3-uM

Become A Better Informed Pilot.

Join 110,000 readers each month and get the latest news and entertainment from the world of general aviation direct to your inbox, daily.

This field is for validation purposes and should be left unchanged.

© 2026 Flyer Media, Inc. All rights reserved. Privacy Policy.

  • About
  • Advertise
  • Comment Policy
  • Submit Press Release
  • Contact Us
  • Privacy Policy
  • Writer’s Guidelines
  • Photographer’s Guidelines