Jean Gingell

As Light Sport Aircraft become more popular, so too will the desire to learn more about maintaining one of the most common engines used in these designs, the Rotax four-strokes. Columnist Dave Martin goes back to school to learn about routine Rotax maintenance as well as safe operation of the popular engine.

Find welding resources at USAWeld.com, Ztron Labs offers an alternative to conventional aircraft circuit breakers, and record your flights with the AV-HD video system from Data Toys. Edited by Abby Ventzke.

Building a classic biplane for the next generation of aviators. By Tom Brusehaver.

Well actually... "Oh nut!" What do you do when you drop a nut inside...