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Jonathan Welsh

Jonathan Welsh
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The 160 hp turbocharged Rotax 916iS is a four-stroke piston engine with redundant electronic fuel injection and ignition. [Credit: BPR Rotax]

2026 Engine Buyer’s Guide

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Our annual survey of the wide array of engine options available to homebuilders, from certified to experimental.

In Case You Missed It

Early or Late?

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Long before I wrote for aviation publications, I was doing testing—of airframes, engines, avionics,...
Groppo Trail

Flying the Groppo Trail

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How to say ‘mountain flying’ in Italian.

Kit Stuff

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Drawing on experience; by cartoonist Robrucha.

Mojave Gang MoVenture

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Elliot Seguin sets a point-to-point record with a little help from his friends.