What's the cheapest and easiest ultralight airplane to build from plans? One of the best contenders is the Affordaplane - or 'A-Plane' as this sophisticated, yet ultra-simple ultralight is popularly called.
The Affordaplane was introduced in 2001 as a back-to-basics, all aluminum, true three axis airplane that anyone could build, especially those on a tight budget.
The design goals for this unique airplane were nostalgic looks (having incorporated the best elements of classic taildraggers such as the Cubs and Champs), ease of assembly, and performance that rivals more expensive ultralights. Safety was also paramount, and resulted in an airframe that surrounds the pilot through 360 degrees. A ten year perfect safety record backs up the claim that this is one safe, tough bird.
The A-Plane's fuselage structure is based on immensely strong two-inch square tubes, similar to many gyroplanes. A technique known as 'match-hole drilling is used to join the parts. Cut, drill, and bolt, to get a perfect fit. Many builders complete their airframe in a single weekend, an unheard of achievement in airplane construction!
At 5' high, the A-Plane is 17'3" long with a 27.5' wing span. The wing features full span ailerons, for perfect control even during strong crosswinds, that would ground other ultralights.
Weight is a legal 254 pounds with a gross weight of 540 pounds. This airplane can easily accommodate 6' plus pilots that weigh up to 240 pounds.
To build the A-Plane, all you need is a level table and some common tools. These include a pop rivet gun, jugsaw, tubing bender (can be home-made), drill press, vise, etc. Pinking shears, scissors, and paint brush are needed for covering the wings and tail. Recommended fabric is inexpensive 1.7 ounce Dacron, painted with house paint.

Controls are standard three-axis stick and rudder with full span ailerons. The flight envelope was designed to be ultralight legal in accordance with FAR Part 103. Cruise is around 60 with a vne of 75 mph.