Sportair Aviation, Inc.

A well-modded RV-10 points to the state of the art in homebuilt four-placers.

Steve Ells surveys those in the know for tips about what to consider when contemplating the purchase of a used aircraft engine.

The Editor-in-Chief discusses how the improper cut of his instrument panel affected the performance of his Dynon autopilot; by Marc Cook.

Many factors go into designing and building good engine mounts, including consideration of the engines thrust line and gyroscopic precession effects. They deserve our respect.