![[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}
Aero ‘lectrics
If you need a horn to sound when the airspeed drops below a certain level or when the power is cut and the landing gear is still up and locked, an electronic circuitry solution is the lightest, most reliable and most cost-effective way to go.
Flying Qualities and the Horizontal Tail
An airplane's horizontal tail is critical to stabilizing the airplane in pitch, trimming out pitching moments caused by the wing and providing control power for maneuverability.
All About Avionics
More and more pilots are installing all-inclusive engine monitoring equipment in their aircraft, and, fortunately, todays monitors are dully reliable.
Roll Your Own
Weight and balance, taxi tests, first flights and debriefings. This is what it all comes down to when you design and build a one-of-a-kind Experimental aircraft. Happily, the airplane lives up to its builders expectations… and then some.
Build Your Skills: Fabric
Most of the hard work is done, and its time for dope. First, pick the right spray outfit, next find a clean, well-ventilated work area and finish your surface preparation, and then you're ready to spray. By Ron Alexander.
The Eagle Takes Off
Precision Airmotives Eagle EMS brings electronic management to traditional aircraft engines for nearly turn the key and go flying. By Marc Cook.
Ask the DAR
As a builder gets ready for his airworthiness inspection, he wonders if he can hire a DAR who is familiar with his design but lives in another state. And what if your airplane doesn't pass inspection?
ViperJet Redux
Before you think to yourself, "I couldn't afford that, let alone fly it" relax a little and let your imagination run wild. The ViperJet offers glove leather interior, rosewood inlay, and performance to spare. Doug Rozendaal completes the picture.
Around the Patch
Whenever hes out and about (or in and on the phone), Editor-in-Chief Marc Cook fields questions from pilots wanting to know the best way to run an engine. His advice? Keep it simple.
Down to Earth
The break-in and fly-off periods are nearly complete for the Vans RV-10, and now its time for paint and soon an unplanned cross-country trip; by Amy Laboda.
In Case You Missed It
Spitfire Squadron Scrambles Again
At Enstone, U.K., groups of builders are creating Spitfire replicas. By Geoff Jones.
Viewfinder
Marc Cook looks at the possibility of Glasair Aviation initiating a new Two Weeks to Taxi builder-assistance program for the Van's RV-10.