Tecnam P2010 TDI: the diesel cross-country aircraft

The Tecnam P2010 chassis with a Lycoming gasoline engine is a perfectly good 4-seat tourer. The same chassis with a Continental CD-170 170 hp turbo-diesel burning Jet-A1 is a different airplane entirely. The TDI variant is the one that pilots who actually fly cross-country on weekends end up gravitating toward — not because diesel is fashionable, but because the math works.

What the TDI is, mechanically

The P2010 TDI shares its airframe with the Lycoming-powered P2010 180hp and P2010 215hp variants. Carbon fuselage, metal wings, fixed gear, 4 seats, G1000 NXi panel. What changes is up front:

• Engine: Continental Aerospace CD-170 — 170 hp turbo-diesel, 4-cylinder, FADEC monoleva (single-lever power control)
• Fuel: Jet-A1 (or Diesel from a road pump in pinch, with operational caveats)
• Cruise: 140+ kt at 10,000 ft on 5.2 USG/h (~20 l/h) at 75% power
• Range: 1,300 nm (2,408 km) on a 240 l tank with 30-min reserve
• Endurance: >14 hours of fuel
• Service ceiling: 18,000 ft (5,486 m)
• Climb: ~800 ft/min at MTOW

The "Gran Lusso" sister model uses the same engine + airframe with leather interior and a configurator-driven trim package. Performance is identical.

Why Jet-A1 matters in light aviation

Avgas 100LL has been on a slow phase-out for two decades. The "LL" is "low lead" — already lower than the older 100/130 fuels — but tetraethyl lead is still in the formula and the EPA + EASA roadmap has been clear that it's exiting. Specific dates depend on the jurisdiction, but the trend is one-way:

• Availability: Avgas pumps at small airfields are increasingly rare. Diesel pumps (technically Jet-A1 in our case) exist at any airfield with rotorcraft or business-jet traffic.
• Price: Avgas 100LL runs €2.50–€3.50/litre depending on country. Jet-A1 runs €1.40–€2.00/litre. The TDI burns 20 l/h vs the gasoline 215 hp variant's 30 l/h. Combined: roughly 40% lower fuel cost per hour.
• Storage: Diesel/Jet-A1 stores better in tanks and is less prone to vapour-lock issues at altitude. Useful in winter ops.

The downside: diesel engines are heavier, more expensive new, and the overhaul cost at TBO is higher. The CD-170 TBO is 2,400 hours, overhaul cost ~€35,000. Compare to a Lycoming IO-360 at 2,000 h TBO and ~€25,000 overhaul. Per hour, the diesel saves a lot on fuel and pays a small premium on engine reserves; for cross-country pilots flying 100+ hours/year, the math comes out clearly in favour of diesel.

What 14 hours of endurance actually buys you

A non-stop 6-hour leg becomes routine. Practical implications:

• A flight from Sicily to the Black Sea coast can be done with one fuel stop instead of three
• Mountain crossings have wide reserves — if weather closes a destination, divert distance is no longer a factor in fuel planning
• Round-trip flights without refueling at the destination — useful at small airfields where Avgas isn't always available
• Pilot fatigue, not fuel, becomes the limiting factor on long legs

In practice, very few pilots actually fly 14-hour legs (bladder, attention, daylight). The endurance is a buffer, not a target. Plan for 4-6 hour legs with multi-hour fuel margins for diversions and weather.

FADEC monoleva — what it actually feels like

The CD-170 uses single-lever FADEC: one throttle. The engine computer manages mixture, propeller pitch, prop RPM, and boost. The pilot sets a power percentage (e.g., 75%) and the FADEC handles everything else.

For a transitioning pilot from a carburetted Cessna or even a fuel-injected Lycoming, this is jarring at first. Three or four levers reduced to one. After about 5 hours of dual time the muscle memory rewrites itself and the simplicity becomes obvious — you're flying the airplane, not the engine.

Failure modes change too. A FADEC failure usually means a graceful degradation to a fixed performance mode (cruise power) — the engine keeps running, you can complete the flight, you land and call maintenance. A traditional carb-and-mags engine has more failure points but each one is more local (mag failure, carb-ice, mixture stuck rich). Both philosophies work; the FADEC approach reduces pilot workload at the cost of more complex electronics behind the firewall.

Cross-country planning specifics

In Voliqo's planner, pick the P2010 TDI and the planner will pull these performance numbers automatically: 240 l fuel capacity, 20 l/h cruise burn, 259 km/h cruise speed, 1300 nm range. The planner's range circle around your departure shows whether your destination is single-leg or whether you need a stop.

For typical cross-country missions:

• 800 km / 430 nm: 3-hour leg, lands with 7 hours of fuel reserve. Easy.
• 1,400 km / 750 nm: 5.5-hour leg, lands with 4 hours of fuel reserve. Comfortable; pick a 5-hour pilot stamina buffer.
• 2,000 km / 1,080 nm: 8-hour leg, lands with 1.5 hours of fuel reserve. Tight on stamina; recommend a planned stop at hour 5.
• 2,400 km / 1,300 nm: 10-hour leg at the edge of endurance. Don't plan this; split into two days.

The TDI's altitude capability (18,000 ft service ceiling) means you can climb above most weather and fly visual-on-top for the cruise. Above FL120 sustained you need supplemental oxygen (legal requirement varies by jurisdiction, typical threshold is FL120–125).

Who it's for

Three buyer profiles:

• The pre-IR private pilot flying 100–200 hours per year, mostly cross-country, who has noticed how often the destination airfield doesn't have Avgas
• The IR-rated owner filing IFR for weather penetration and wanting altitude capability for VFR-on-top
• The flight school running CPL/IR cross-country phases — the diesel's fuel cost economics scale across the rental hours

It's NOT for: pure pattern pilots, weight-conscious training schools (the Lycoming variants are lighter and slightly cheaper to acquire), or operators in regions where Jet-A1 isn't reliably available.

Bottom line

The P2010 TDI is the cross-country airplane the P2010 was designed to be all along — the gasoline variants exist because not every market has accepted diesel yet. If you fly long legs, if you cross terrain, if you've ever taxied to the pumps and been told "we're out of Avgas, come back tomorrow", the TDI is the airplane you should be flying.

It costs more to buy and slightly more to maintain. It saves on fuel, on endurance, on availability anxiety. For a 200-hour/year cross-country pilot, the math closes in 4–5 years. For a 50-hour/year local-flying pilot, the gasoline P2010 is the better economic answer.

Pick the engine that matches your actual mission profile, not the one that matches the brochure aspiration.