Sonex A TailwheelExperimental Aircraft • Renton, WA, USA

This is a Sonex A Tailwheel project aircraft, serial number 1667, offered for $15,000 by the original owner. Purchased as a quick-build kit in 2014, the airframe is already a rolling fuselage with a structurally completed empennage and seat area. The builder has installed dual controls and a disc brake upgrade, and the build book includes hundreds of photos documenting progress.

The listing comes with an Aerovee 2.1 80 HP engine, including upgrades, which remains in unopened factory boxes. Nearly all associated parts for completion are included, with the notable exceptions being the propeller and avionics. This is an excellent starting...