Two de Havilland Canada DHC-1 Chipmunks made the journey to EAA AirVenture Oshkosh this year, marking the type's 80th anniversary with a rare cross-country flight for aircraft that were never designed to leave the traffic pattern. Katie Mack and Lisa Corker, representing the Canadian Aviation Museum in Windsor, Ontario, flew the vintage trainers into the world's busiest airspace with support from Steve Thorne (Flight Chops), whose modern, ADS-B-equipped aircraft handled navigation and ATC communication for the flight of three. The Chipmunk, developed shortly after World War II as an ab initio trainer for pilots destined for high-horsepower aircraft like the Harvard/T-6, was purpose-built to be difficult: its inverted engine offset creates asymmetric thrust characteristics that demand more left rudder correction than a conventional design, deliberately simulating the handling qualities of a more powerful warbird. It carries no navigation equipment beyond basic VFR instruments, no autopilot, and the crews resorted to strapping iPhones atop the attitude indicators for moving-map guidance.
The flight itself illustrates a scenario increasingly common in the warbird and vintage aircraft community: taking irreplaceable, minimally equipped aircraft into modern, high-density, class-heavy airspace environments they were never certified or intended to operate within. Because the Chipmunks lack ADS-B Out, the pilots required specific ATC exemptions to transit the Class C shelf and Class B airspace surrounding the route to Oshkosh — a reminder that the 2020 ADS-B mandate created lasting operational friction for legacy aircraft owners who fly infrequently outside of local pattern work or airshow appearances. The decision to pair the Chipmunks with a well-equipped chase aircraft for flight following, weather avoidance, and airspace coordination reflects a pragmatic risk-mitigation approach that many warbird and vintage operators now use as standard practice rather than optional insurance. Carrying spare tailwheel parts and a case of oil (each aircraft burns roughly a quart per hour) for the trip further underscores the maintenance realities of operating 80-year-old airframes far from home base support.
For working pilots, particularly those flying business jets or airline equipment into Oshkosh during AirVenture week, the story is a useful reminder of the wildly heterogeneous traffic mix converging on KOSH each summer — from Part 25 turbine aircraft on RNAV arrivals to day-VFR taildraggers with a compass as their only "avionics." The controllers and procedures at Oshkosh are built specifically to accommodate this mix, but it places a premium on visual traffic awareness, adherence to the published NOTAM procedures, and mutual situational awareness among pilots operating at vastly different technology and performance levels in the same pattern. Pilots transitioning into Wittman Regional during the show, regardless of what they normally fly, benefit from understanding that aircraft like the Chipmunk are operating with no transponder-based conflict alerting, no GPS, and pilots navigating visually off checkpoints and hand signals from the ground — a stark contrast to the glass-cockpit environment most professional pilots inhabit daily.
More broadly, the flight reflects the aviation community's ongoing effort to keep historic and warbird-type aircraft airworthy and visible, often through museum operations and volunteer-supported ferry flights tied to anniversary milestones. Events like this generate public interest and funding support for aircraft preservation, but they also depend on a shrinking pool of pilots current and proficient in tailwheel, high-torque-effect, minimally instrumented aircraft — skills that are increasingly rare as flight training has shifted almost entirely to tricycle-gear, glass-panel trainers. As squadrons of Chipmunks, Harvards, and similar postwar trainers age further, cooperative ferry operations pairing vintage aircraft with modern chase support, as demonstrated here, are likely to become a more standard model for safely bringing historic aircraft to airshows and preserving access to them for future generations of pilots and enthusiasts.