In Case You Missed It
Understanding Lithium Batteries
Kathy and Reg Nicoson of EarthX, Inc. explain what you need to know.
Viewfinder
Mark Cook revisits George Happs RANS S-19 project to see how the Rotax 914 installation has panned out.
Build It Better: Learning from History
Everything we know about aviation comes from the experience of designers, builders and pilots who came before us. Understanding their successes and failures can help us fly and build more safely.