![Oshkosh is more popular than ever with three-quarters of a million people in attendance at AirVenture 2026. [Credit: LeRoy Cook]](https://www.kitplanes.com/wp-content/uploads/2026/09/IMG_7321-Topaz-Gigapixel-2x-scale.jpg?w=534&h=462&crop=1 "Wide World of Airplanes"){kind=tracking}
![Maintenance technician William Vergonet conducts an inspection on a Cub. [Credit: Lisa Turner]](https://www.kitplanes.com/wp-content/uploads/2026/09/IMG_3535.jpg?w=265&h=198&crop=1 "Post-Flight Maintenance Debrief")
![Pat McKiernan has found that he and his dad who built this beautiful RV-7 simply learned to enjoy the build. [Credit: Bill Wilson]](https://www.kitplanes.com/wp-content/uploads/2026/08/Builder.jpg?w=265&h=198&crop=1 "Life Lessons From Building an Airplane")
![[Credit: AdobeStock]](https://www.kitplanes.com/wp-content/uploads/2026/08/AdobeStock_51865118.jpg?w=265&h=198&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?")
Alternative Energies
Three new aircraft, Synergy, Pipistrel Panthera and Volta Volare, are pushing the innovation envelope with their propulsion systems, performance and fuel economy. By Dean Sigler.
Free Flight
In a short, late-afternoon flight, Paul Dye takes on a particular Houston cloud formation and exalts in the glory of flying an airplane perfectly suited to his whims.
Letters
Magic Carpet RideMr. Dye, I greatly enjoyed and appreciated your skillfully written Free Flight article, "Sacred Ground," published in the March issue. You certainly...
Flight Testing
Personnel roles, emergency contingencies, communications-there are many moving parts involved in the first flight of a homebuilt. Paul Dye catalogs them and offers a sample flight plan that worked for him.
Firewall Forward: Engine Mounts
Dynafocal, conical or DIY? Some engine-mount decisions are dictated by your choice of engine, but there’s more to it than that. Dave Prizio walks you through the process of mating engine to airframe.
Electronic Ignitions
As electronic ignitions become more popular, some homebuilders will want to consider making the switch (especially given the potential savings in fuel costs). Tom Wilson provides an overview of the marketplace and offers a “cost-benefit” analysis.
Build It Better: Knowing how it works
How do you reconcile a discrepancy between two gauges in your aircraft, say, a float-gauge reading and fuel-totalizer data? It helps to have a deep understanding of your systems.
Ask the DAR
How do you know when the sum of purchased parts exceeds the 51% rule? Does the data plate have to match the registration? DAR Mel Asberry answers these questions and more.
Aero ‘lectrics
Jim Weir concludes his explanation of how to make any cell phone power up a remote electrical device.
In Case You Missed It
Future Fuels
Thanks to environmental regulations, court challenges and economic realities, an unleaded replacement for avgas is definitely on the horizon, but it’s still a distant horizon. Meanwhile, we still have 100LL, which remains widely available. By Paul Bertorelli.
Ask the DAR
Avionics certification, ops lims for self-designed aircraft, house paint on Experimentals.
Old, New & Old Again!
We are seeing more talk of people rebuilding cores found in barns or the back of hangars.