PlaneFox tracks 1 Druine D-31 Turbulent aircraft for sale and re-reads every one of them from the broker and dealer sites it watches, so the figures below move when the market moves. Every number on this page is measured from those live listings, not taken from a published price guide.
A Druine D-31 Turbulent flies about 216 nm, roughly 400 km, which is about 2 h 29 min in still air at typical cruise.
A Druine D-31 Turbulent costs about EUR 533 a month to run, or about EUR 63 for every flight hour when it is flown 150 hours a year.
The Druine D-31 Turbulent is a French single-seat, low-wing sport aircraft designed by Roger Druine in the early 1950s. It first flew in 1953 and became one of the better-known European plans-built light aircraft of the period, with additional examples built by amateurs and by small manufacturers, notably in the United Kingdom. Its role is simple personal flying, local touring and tailwheel recreational flying. The D-31 matters because it helped define the economical postwar homebuilt: a compact wooden airframe, modest power requirement and straightforward handling for pilots comfortable with light tailwheel aircraft.
Performance varies significantly by individual build, engine installation and propeller, so buyers should verify figures from the aircraft’s own documentation and flight-test records. Typical D-31 Turbulent examples use an air-cooled Volkswagen-based engine conversion in the 30 to 45 hp range, although approved or documented installations differ by country and registration category. Published figures for representative aircraft place cruise speed broadly around the 65 to 75 knot range, with short-range touring endurance rather than long cross-country capability. The aircraft is normally operated as a light VFR machine, with limited useful load once pilot, fuel and any radio equipment are considered. Service ceiling is adequate for local recreational use, but climb performance is sensitive to weight, temperature and engine condition.
The Druine D-31 Turbulent seats one pilot in a very narrow cockpit, usually under a simple canopy or enclosed cockpit arrangement depending on the individual aircraft. Comfort is best understood in vintage homebuilt terms: light controls, minimal baggage provision and limited space for modern equipment. There is no standard factory avionics suite such as Garmin Perspective or G1000. Most aircraft are equipped for day VFR with basic flight and engine instruments, commonly including airspeed, altimeter, compass, tachometer and oil temperature or pressure indications. Handheld or panel-mounted VHF radio, transponder, ADS-B equipment and intercom fit vary by owner and local requirements.
Used-market evaluation should focus on build quality, documentation and the condition of the wooden structure. Important checks include wing spars, glue joints, fabric covering, control cable routing, landing gear attachments, engine mount condition and corrosion on fittings. Engine logs are especially important because many aircraft use non-certified automotive conversions with installation-specific cooling, ignition and carburetion details. Common upgrades include modern radio fit, lightweight transponder or ADS-B equipment, electrical system improvements and refreshed fabric covering. In the used market, the Druine D-31 Turbulent is positioned as a low-cost, characterful single-seat vintage homebuilt, best suited to buyers who value simplicity and are prepared for hands-on ownership.