![A compact H3R Halon 1211 extinguisher, sized for a two-seat cockpit and safe on energized electrical fires. [Credit: H3R Aviation]](https://www.kitplanes.com/wp-content/uploads/2026/09/mfr_H3R_A344T_Halon_1p25lb.jpg_preview-Topaz-Gigapixel-2x-scale.jpg?w=534&h=462&crop=1 "Choosing the Right Cockpit Fire Extinguisher for Your Aircraft"){kind=tracking}
![[Credit: LeRoy Cook]](https://www.kitplanes.com/wp-content/uploads/2026/08/IMG_2791.jpg?w=265&h=198&crop=1 "The Safety Triangle: Balancing Skill, Knowledge, and Judgment in Flying")
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![A CubCrafter’s Carbon Cub headed to Sun ‘n Fun in the time-honored tradition. [Credit: CubCrafters]](https://www.kitplanes.com/wp-content/uploads/2026/08/Carbon-Cub-UL.jpg?w=265&h=198&crop=1 "Sun ‘n Fun 2026 Highlights: Electric RV-10, Modular Avionics, and MOSAIC")
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Engine Beat
The Rotax 912 engine has become ubiquitous in homebuilt aviation, and now a company has found a way to improve its fuel efficiency. By Steve Ells.
Experimotive
Bud Warrens Geared Drives has entered the firewall-forward business with promising results thanks to a new PSRU. By Rick Lindstrom.
Ask the DAR
This month DAR Mel Asberry tackles questions about modifying an aircraft and the flight testing required, what should be on a dataplate, and what you need to know about getting an airworthiness certificate after completing a partially built aircraft.
Light Stuff
Another European SLSA reaches American shores in the form of Tecnams high-wing, high-style, partially carbon-fiber Tecnam P2008. By Dave Martin.
Around the Patch
Editor-in-Chief Marc Cook looks at the potential impact on GA of Lycomings new IE2 engine that features electronic engine management.
Down to Earth
Amy Laboda chronicles the challenges she encountered when trying to get the ECI B-type cylinders for her certified Lycoming IO-540 replaced.
Around the Patch
Editor-in-Chief Marc Cook sees progress and potential in developing electric motor and battery technology.
Ask the DAR
DAR Mel Asberry discusses the process for registering and certifying an ELSA, including how to find an inspector and the paperwork you'll need to provide.
Preparing For First Start
Steve Ells discusses the preparation and procedures for starting your new or newly overhauled engine for the first time.
Free Flight
When testing a new avionics component in your homebuilt, you must be prepared to deal with any consequences that may develop.
In Case You Missed It
Weather In the Cockpit
Portable receivers rule the roost. How you choose depends on your app of choice.
Exhausting!
We visit Vetterman Exhaust for a behind-the-scenes look at how exhaust systems are made.
The Home Machinist, Part 9
If parts that don't quite fit are grinding you down, author Bob Fritz has a solution: Use a lathe to create a smooth finish on a precisely proportioned piece. While hes at it, hell demonstrate two ways to use the machines calipers to measure necessary offsets.