![[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")
All About Avionics
A clear definition of the mission along with a realistic assessment of the type of flying you'll do are key to successfully completing an avionics retrofit. By Stein Bruch.
Engine Beat
Steve Ells surveys those in the know for tips about what to consider when contemplating the purchase of a used aircraft engine.
Ask the DAR
Can you use Function Code 33 to amend Experimental aircraft limitations and flight-test locations?
Aero ‘lectrics
Transistors don't like excessive heat, but there's a way to beat it: an engineered heat sink.
Wind Tunnel
When conducting aerodynamic testing related to airflow over an object, how do you ensure that you've matched the conditions from one test to another, and why does it matter?
On Safari
Builder Rick Reese applies state-of-the-art quality assurance techniques to the building of his exceptional Safari helicopter. By Mary Bernard.
SeaRey LSX Amphibian
Progressive Aerodyne has a new version of its kitbuilt amphibian, the SeaRey LSX, and the updates to the design live up to high expectations. By Ed Wischmeyer.
Helping Hands in the Plansbuilt Hangar
An appreciation for Steve Wittman's ingenious design and the community of those who build from plans.
What’s New
A new idle gear for the IO-540, Glasair sets Reno speed record, activate your engine pre-heater with a cell phone and more. Edited by Mary Bernard.
In Case You Missed It
Two-axis Electric Trim Controller for Under $50
This homebuilt two-axis electric trim controller has all the functions of the fanciest commercial units, yet it costs less than $50 for the parts.
Builder Liability and You
There are ways to protect yourself from lawsuits when you sell a homebuilt aircraft. These include accurate and complete documentation of the building process, adherence to manufacturers instructions during the build, a good record of safe flight over a period of time, third party liability insurance protection and a signed liability waiver.
