Marc Cook
Marc Cook is a veteran special-interest journalist who started as a staffer at AOPA Pilot in the late 1980s. Marc has built two airplanes, an Aero Designs Pulsar XP and a Glasair Aviation Sportsman, and now owns a 180-hp, recently modernized GlaStar based in western Oregon. Marc has 5000 hours spread over 200-plus types and four decades of flying.
AI Amuses, But It Can’t Replace Aviation Experts
AI can't replace real aviation expertise—building safe aircraft requires hands-on knowledge, experience, and a well-calibrated BS meter.
CompAir 6.2 Piston and Turbine Singles at Sun ‘n Fun 2025
The newest iteration has a walter 601D on the nose and provides impressive cruise numbers in addition to room for six-plus people inside the cavernous interior.
AeroLEDS from Sun ‘n Fun 2025
Ryan Edmark introduces the new AeroLEDS Nano strobe and position lights as well as the recently released SunBeam Equinox rectangular taxi and landing light at Sun 'n Fun 2025.
Dynon Corgi Servos
Dynon Avionics showed off its new Corgi electric servos designed for trim and other applications.
One Thing Leads to Another
It started simply enough. With a mistake. OK, maybe just a misapplication of learned behavior.
Wanted: Engine Competition
Imagine a time not too long ago when pilots embarking on the delicious endeavor to build their own airplanes could consider multiple sources for just about any engine on the menu.
Van’s Aircraft Year-End Update: “Significant Strides”
Van’s Aircraft celebrates 2024 achievements: reduced kit lead times, RV-15 progress, and a new avionics department launch.
In Case You Missed It
Hawking That New Engine
After 20 years the long-gestating DeltaHawk diesel is suddenly hotter than Jeff LaVelle’s turbos on a 400-mph lap.
Alternative Energies
Diesel engines, anyone? How about biofuel? More builders are turning to such alternatives in the name of fuel economy, while the industry awaits fuel cells and better batteries. By Dean Sigler.
Wind Tunnel
Stall flutter is the result of the elastic axis of a wings surface being aft of the aerodynamic center, resulting in instability. A vicious cycle of lift, twist, stall and lift may ensue.