In Case You Missed It
Avidyne IFD540 vs. Garmin GTN 750
Understanding the differences between these highly capable GPS navigators.
Learning to Weld
Ken Scott's series on welding closes with an afterword from his mentor, Philip Groelz, who explains why TIG welding is the way to go.
Ask the DAR
DAR Mel Asberry clears up airspace restrictions for homebuilts during flight testing and discusses how the original builder of a homebuilt design remains the builder unless the airworthiness certificate is surrendered, which has implications for reselling an aircraft.