![[Credit: ChatGPT]](https://www.kitplanes.com/wp-content/uploads/2026/07/What-did-you-miss-Topaz-Gigapixel-4x-scale.jpg?w=534&h=462&crop=1 "Last Bits"){kind=tracking}
![The best builders learn to combine both mindsets. They build like engineers but think like future mechanics. [Credit: Bill Wilson]](https://www.kitplanes.com/wp-content/uploads/2026/07/IMG_0037.jpg?w=265&h=198&crop=1 "Building vs. Fixing")
![[Credit: Wikimedia Commons]](https://www.kitplanes.com/wp-content/uploads/2026/07/F-117_Nighthawk_Front.jpg?w=265&h=198&crop=1 "Odd and Unusual Aircraft")
![After nearly 75 years, the basic Tailwind design remains sound. [Credit: LeRoy Cook]](https://www.kitplanes.com/wp-content/uploads/2026/07/IMG_4636.jpg?w=265&h=198&crop=1 "The Wittman Tailwind")
![Trimming composites gets the full PPE job. [Credit: Eric Stewart]](https://www.kitplanes.com/wp-content/uploads/2026/07/7-2.jpg?w=265&h=198&crop=1 "A Few of My Favorite Tools")
Down to Earth
Many homebuilders understand their kits as just a starting point for their own preferred modifications.
Anatomy of a Modification
Paul Dye takes readers through a rework of his RV-3's fuel system to illustrate why some mods are a sound choice.
Ask the DAR
Can a former Part 103 aircraft be registered as an LSA? And how is an appropriate Phase I flight-test area determined?
Aero ‘lectrics
This month, Jim Weir describes how to create an LED strip with any three colors and offers a brief lesson on human optics too.
Wind Tunnel
Certain situations and configurations just call out for a ducted-fan installation. Barnaby Wainfan explains the benefits and drawbacks.
RANS S-7S Courier
Marc Cook pilots the new RANS S-7S and finds many improvements, from increased fuel and storage capacity to a simplified aileron-control system that makes handling better than ever.
Editor’s Log
Editor Mary Bernard addresses readers’ concerns about legibility in the magazine and offers a correction about pricing of the Safari kit helicopter.
What’s New
Master Mechanic introduces the Swift Driver, Aircraft Spruce launches an online magazine and offers a simplified FAR/AIM book, and California Power Systems carries Rotax 912 engine rubber replacement kits.
In Case You Missed It
Editor’s Log
While some aviation enthusiasts such as the Friends of the RV-1 devote their time to historic restoration, those at the Electric Aircraft Symposium contemplate what the future might bring. By Mary Bernard.
MGL Avionics Stratomaster MAXI Single E1
MGLs maxi singles are designed to drop into a standard 3.125-inch hole, while the Smart Singles fit into a 2.25-inch hole. Author Rick Lindstrom found that the Maxi Single E1 engine monitor was just the ticket to get him flying while his other unit was in the shop for repairs.
Light Stuff
Columnist Dave Martin flies one of the best-selling Special Light Sport Aircraft (factory-built), the Flight Design CTSW. Although he encounters a few surprises, transition training for pilots new to the design would likely alleviate such things.