![[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}
Ripples
I wrote this in April to meet a May deadline for this September issue of KITPLANES®, which came out before AirVenture in July. I...
Dimpling for Beauty and Speed
Each time you install a fastener on your airplane kit, consider whether the head of that fastener (rivet or screw) should protrude above the...
More PCB Fun
OK, this one is the witch of the bunch. You’ve had two months to download and read all the instructions for Circuitmaker/Traxmaker, and I’m...
Clattering About Diesels
DeltaHawk’s DHK180 engine has received its FAA certification. Yes, that’s the same inverted-vee, four-cylinder, two-stroke Jet A-burning diesel we’ve heard about for years. And,...
Training, Teaching and Coaching
With a title like that, you might expect that I’d excuse anyone without an instructor certificate from reading this month’s column. But if the...
Basically Bad
Last month this column was full of low-skill derring-do; this month I’m back with another blood pressure raising potboiler, this time more of the...
Slide-and-Fly Audio Panels
PS Engineering and Garmin have good replacement options for the obsolete GMA 340.
In Case You Missed It
Parallels, Stops, and Travel Limiters
Although the title might suggest it, this is not about parallel parking, speeding tickets, or driving of any kind.
![[Credit: Adobe Stock]](https://www.kitplanes.com/wp-content/uploads/2026/03/AdobeStock_500023606_Editorial_Use_Only.jpg?w=324&h=160&crop=1 "Homebuilder’s Insurance")
To Launch a Light Sport
It’s amazing what a little light will reveal, in this case a planned hole for the wing that would have been dangerously close to the wingspar. No worries. The problem was remedied, and it was on to fixing flaws in the wing’s surface and working on the nosewheel and front suspension; by Bob Fritz.