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.
![Coming in for a landing at Humberd’s Farm [All Images Credited to Jon Humberd]](https://www.kitplanes.com/wp-content/uploads/2026/07/9-1.jpg?w=324&h=160&crop=1 "Overcoming Setbacks on the Zenith 750SD Xtreme")
Overcoming Setbacks on the Zenith 750SD Xtreme
It is easy to realize what your true passion is when one thing is continually on your mind. Even with the multiple job duties...
![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
Challenger Enjoys a Birthday
250 enthusiasts gathered at Erie Airpark, in Illinois, to celebrate a major milestone: The 25th anniversary of the Quad City Challenger line of aircraft. By Bryan Quickmire.
Alternative Energies
Dale Kramer invigorated the ultralight movement in the 1970s with the Lazair. Now he's doing it again-with a battery-powered version. By Dean Sigler.
Error Chain
Panic! What do you do when you find yourself tumbling toward certain demise and none of the tools available seem to be working?
![[Credit: Eric Powell]](https://www.kitplanes.com/wp-content/uploads/2026/02/AdobeStock_1043661239-scaled.jpeg?w=324&h=160&crop=1 "Weight In The Balance")