![Humberd and his daughter using the 701 for some farm duty transportation. [All Images Credited to Jon Humberd]](https://www.kitplanes.com/wp-content/uploads/2026/05/1-3.jpg?w=534&h=462&crop=1 "Builder’s Spotlight")
![Checking out East Tennessee scenery from the 701. [Credit: Jon Humberd]](https://www.kitplanes.com/wp-content/uploads/2026/04/3.jpg?w=265&h=198&crop=1 "Builder’s Spotlight")
![[Credit: Jon Humberd]](https://www.kitplanes.com/wp-content/uploads/2026/02/20-2.jpg?w=265&h=198&crop=1 "Epic Is Back")
![Members of the North Idaho High School Aerospace Program gathered at KSZT [Credit: North Idaho High School Aerospace Program]](https://www.kitplanes.com/wp-content/uploads/2026/02/IMG_3499.jpg?w=265&h=198&crop=1 "North Idaho High School Student ACES Fly the Aircraft They Built")
All About Avionics: Wiring Bundles
Anyone can make wiring look good. The bonus is that your installations maintenance and future upgrades will be much easier. Stein Bruch shows you how.
Designer Spotlight: Lawrence B. Sperry
Amy Laboda takes a look at the life of inventor Lawrence Sperry, whose childhood fascination with a spinning top led to his development of critical flight control systems...and even the aircraft seat belt.
The Price of Power
More power! Bob Fritz takes a close look at what makes batteries go, what kind is best for your plane, and how to get the most out of your battery.
Freedom to See It Differently
Jeff Van West flight-tests two popular EFISes in a Remos GX LSA, and examines their accuracy, user interface and reliability. After all the stones have been unturned, your choice can be simplified: Are you a Mac or a PC?
To Launch a Light Sport
Its 90% done with 90% to go! Bob Fritz has a flyable airplane and a semi-long list of things still left to do to improve it.
Cool Runnings
Norm Ellis does the math and shows you how to select the right oil cooler for your engine-cooling package. Given the critical role oil temperature plays in engine health, its a good idea to go beyond selecting the smallest, lightest and cheapest cooler you can find.
To Launch a Light Sport
Bob Fritz presses on! In this installment, he powers up the Grand Rapids Technologies EFIS panel, solves a curious com antenna problem, installs the Zaon PCAS, fits the door to the fuselage’s curvature, and streamlines the air flow to the oil cooler.
The Home Machinist
Phillips? Flat head? Double blade? Bob Fritz clears up questions you didn't even know you had about screwdrivers. When you're building a plane, the right tool for the right job (and right space) really does matter.
In Case You Missed It
Oil Filter Slicer-Off-Er
The process of inspecting an oil filter is not complicated. Slice the top off...
Ernie, Can You Hear Me?
Every now and again, you get to do something that just feels good inside....