![[Credit: Zenith Aircraft Company]](https://www.kitplanes.com/wp-content/uploads/2026/06/31142685469.jpg?w=534&h=462&crop=1 "Zenith Throws Open Its Doors for “Fly-In to Summer”")
![[Credit: EAA]](https://www.kitplanes.com/wp-content/uploads/2026/06/vintage-in-review-herb-clark.jpg?w=265&h=198&crop=1 "Vintage in Review Returns to Oshkosh: Five Days, Five Stories, and a Living OX-5")
In Case You Missed It
Engine Beat
Vacuum systems may be an imperfect way to power instruments, but careful monitoring and maintenance can forestall common issues. By Steve Ells.
Alternative Energies
Dale Kramer invigorated the ultralight movement in the 1970s with the Lazair. Now he's doing it again-with a battery-powered version. By Dean Sigler.
Combustion Pressure and the Future of the Aero Engine
Editor-in-Chief Marc Cook looks at the changes within Lycoming and how they affect kit builders, as well as Superior Air Parts future since Thielert's bankruptcy.
Light Stuff
Interested in ultralights? Roy Beisswenger explains what is available and how to make the right choice for your needs.