Fixed Formation
The Bel-Aire 4000 flies on lower wings from a Piper PA-22 Colt and upper wings from a PA-12 Super Cruiser.
Using Level Accelerations to Determine Climb Performance
A faster way to gather data over a wide range of conditions.
![Builder’s Spotlight Humberd and his daughter using the 701 for some farm duty transportation. [All Images Credited to Jon Humberd]](https://www.kitplanes.com/wp-content/uploads/2026/05/1-3.jpg?w=534&h=462&crop=1)
![Builder’s Spotlight Checking out East Tennessee scenery from the 701. [Credit: Jon Humberd]](https://www.kitplanes.com/wp-content/uploads/2026/04/3.jpg?w=265&h=198&crop=1)
![Epic Is Back [Credit: Jon Humberd]](https://www.kitplanes.com/wp-content/uploads/2026/02/20-2.jpg?w=265&h=198&crop=1)
![North Idaho High School Student ACES Fly the Aircraft They Built Members of the North Idaho High School Aerospace Program gathered at KSZT [Credit: North Idaho High School Aerospace Program]](https://www.kitplanes.com/wp-content/uploads/2026/02/IMG_3499.jpg?w=265&h=198&crop=1)














