Mini-IMP Aircraft Co.

Always in high demand, be ready to act fast when you find one you like.

Is an aircraft’s empty weight required on the data plate? Does the gross weight change when an LSA is converted from conventional landing gear to floats? Should engine maintenance be entered in the builder’s logbook? Does the Minimax still qualify as an ultralight?

Ben Haass STOL Zenith 801, featuring a Ford V-8 auto conversion, made quite a first impression at AirVenture 09. This month, he tells Rick Lindstrom what makes it all work.

Tips, tricks—and tools.