![[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}
Length Matters
Last month I wrote about AN washer usage. This month I’ll take on AN bolts—specifically, their grip length. Riveting stuff, huh? No? Somewhat captivating?...
Bad Weld
Sometimes welding should be left to those more skilled in its practice. I don’t think I would trust this repair that was made to...
Light Sport’s Next Steps
At AirVenture this year—just before it, actually—the FAA released the Notice of Proposed Rulemaking encompassing MOSAIC, short for Modernization of Special Airworthiness Certificates. The...
Ranting About All Those &%#@$! Screws
It’s condition inspection time again for the ol’ box kite, hence my grumbling mood. It’s like this every year. I curse the zillion little...
Spinner Bulkhead Clocking
Spinner woes were the topic of midsummer musings on Van’s Air Force this year. Specifically, Bill from Virginia commented how, after getting his Hartzell...
Forever Learning
Way back when I was working for NASA, I used to get mail addressed to “Dr.” Paul Dye, which always amused this college graduate...
In Case You Missed It
Build it Better
Paul Dye has used his engineering discipline to jot down his thoughts on the many lessons learned as we gain experience as pilots and builders. His goal, and ours, is to leverage the tribal knowledge of longtime builders such as Dye to get you thinking about Experimental aircraft on a higher level. Not simply nuts and bolts, but larger concepts centering on safety and self-discipline. We hope you enjoy this series.
The History of Homebuilt Gyrocopters
The AutoGyro has come a long way in more than a century of flight.
