Dave Diehl is a 40-year communications professional. He owns and flies an RV-4 based in Hagerstown, Md., and is currently building an RV-12. He is the author of an upcoming book about Dick VanGrunsven and Van’s Aircraft.
Builder Walter Treadwell has taken on projects that many of us would find daunting, and he keeps upping the ante. First came a Lancair 235, then a plansbuilt Jenny JN-4, followed by a P-38 and then his current project, a resized Sikorsky S-38. Some 4000 hours into the new project, Treadwell has a ways to go, but fortunately he has a mini AgCat to fly in the meantime; by Bob Fritz.