![[Credit: AdobeStock]](https://www.kitplanes.com/wp-content/uploads/2026/08/AdobeStock_51865118.jpg?w=534&h=462&crop=1 "FAA MOSAIC Rule Fully Implemented")
![My 36 year old clipboard from when I started at Boeing. Engineering ruler and fastener/fastener hole cheat sheets. [Credit: Andrew Robinson]](https://www.kitplanes.com/wp-content/uploads/2026/08/Liaison_clipboard.jpg?w=265&h=198&crop=1 "What Is a Liaison Engineer?")
![At Sun ‘n Fun 2026, Viking Aircraft Engines surprised the crowd with its first complete kit — the V-42, a high-wing twin powered by two Honda-based engines. Here’s an early look. [Credit: Andrew Robinson]](https://www.kitplanes.com/wp-content/uploads/2026/08/P1020293.jpg?w=265&h=198&crop=1 "Viking V-42 Twin")
![A STOL CH 750 [Credit: Mike Davenport]](https://www.kitplanes.com/wp-content/uploads/2026/08/STOL-CH-750.jpg?w=265&h=198&crop=1 "Why Are So Many Airplanes Yellow?")
![A Zenith STOL CH701 on Zenair amphibious floats rests on a sandbar on the Caribbean island of Guadeloupe. [Credit: Zenith Aircraft]](https://www.kitplanes.com/wp-content/uploads/2026/08/zenair-floats-STOL_CH_701a-Topaz-Gigapixel-2x-scale-Topaz-Gigapixel-2x-scale.jpg?w=265&h=198&crop=1 "Zenith STOL CH 701 at 40: The Iconic ‘Sky Jeep’ Design Audit"){kind=tracking}
Engine Beat
Do kit aircraft owners have to comply with ADs? Steve Ells examines the dos and donts of this tricky question.
Understanding the Scope of Your Operating Limitations
DAR Mel Asberry clarifies the confusion: Is a homebuilt owner bound by someone elses operating limitations?
Unusual Attitude
Sleeping on her first flight? Its the sign of a good builder/pilot, and a trusting and relaxed wife.
Letters
No Guessing Dynon Avionics would like to clear up a few errors in the July 2009 article Freedom to See It Differently. The...
Love the One You’re With
Once you finish building a project, it's tempting to second-guess whether you should have done something different, or perhaps waited for the next gen of a new technology to make an appearance. But flying two differently powered Sportsman aircraft gave Editor in Chief Marc Cook a new appreciation for his own airplane and its more than adequate capabilities.
What’s New
Lancair's Piston Evolution has flown, and MGL Avionics V10 com radio debuts. Edited by Mary Bernard.
You and the Tube
For some builders, the prospect of flaring hard-line tubing is daunting. Ishmael Fuentes demystifies the process, and shows you how to get good results every time.
Aero ‘lectrics
Jim Weir delves into the world of barrier strips, wire markers, resettable fuses, nylon connector usage, dyeing and inrush current limiters.
In Case You Missed It
A Tale of Two Kits
What a difference a few years make. Paul Dye discusses the evolution of kits, using the two he built (Van’s RV-8 and RV-3) as examples.
The Home Machinist
Taking that first cut into the sheet metal of an aircraft panel can be daunting, and being as precise as youd like is even more so. Author Bob Fritz eases your anxiety about the process with some tips about how to use the right tool for the right job, so that the hole you get is the one you wanted.