Jon Humberd
Jon is a Tennessee farmer who enjoys airplanes. His notable achievement is building/flying the popular Super701 from a 300-foot farm strip. He loves demonstrating the plane’s capabilities, including competing in events like the National STOL Series, with the best overall score at Sun ’n Fun ’21. Jon also helps
other Zenith builders through consulting.
![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=324&h=160&crop=1 "Builder’s Spotlight")
Builder’s Spotlight
Part 22 of an ongoing Zenith 750SD Xtreme build, pushing the design further into extreme STOL performance territory.
![Checking out East Tennessee scenery from the 701. [Credit: Jon Humberd]](https://www.kitplanes.com/wp-content/uploads/2026/04/3.jpg?w=324&h=160&crop=1 "Builder’s Spotlight")
![[Credit: Jon Humberd]](https://www.kitplanes.com/wp-content/uploads/2026/02/20-2.jpg?w=324&h=160&crop=1 "Epic Is Back")
Building the 750 SDXTREME: Part 17
Custom mods to the 750 SDX main gear and nosegear bring serious weight savings and unique titanium parts to life—right down to the pedals and steering rods.
Building the 750 SDXTREME: Part 16
Tubeless tires, prototype gear, and cabin mods—follow the ongoing adventure of getting the highly modified 750 SDX on its feet.
In Case You Missed It
Expansion Team
For RV-12 owners looking for an alternative engine option, Jabiru offers a worthy contender. By Marc Cook.