In Case You Missed It
Ask the DAR
How do you know when the sum of purchased parts exceeds the 51% rule? Does the data plate have to match the registration? DAR Mel Asberry answers these questions and more.
Tempest AA470 Oil Filter Cutter
If you’re doing your own routine maintenance—and if you’re not, why not?—you’re going to...
Higher, Faster, Stronger
Glasair’s decision to turbocharge its Sportsman model opened up the door to additional design considerations and refinements. But getting to the desired performance has proved challenging. By Marc Cook.
Future Fuels
Thanks to environmental regulations, court challenges and economic realities, an unleaded replacement for avgas is definitely on the horizon, but it’s still a distant horizon. Meanwhile, we still have 100LL, which remains widely available. By Paul Bertorelli.