The Diamond DA42 is a four-seat, twin-engine, propeller-driven utility airplane manufactured by Austrian company Diamond Aircraft Industries whose airframe is composed largely of composite materials with carbon fibre. It features a Garmin G1000 glass cockpit.

It was the first diesel-powered, fixed-wing aircraft to perform a non-stop crossing of the North Atlantic on August 16, 2004. Diamond test pilot Gerard Guillaumaud flew from London (Ontario, Canada) to St. John (Newfoundland, Canada), a flight that took 7.5 hours, and from there to Oporto (Portugal), completing the trip in 12.5 hours with average fuel consumption of 5.74 gallons per hour (2.87 gallons/h per engine, or 10.87 litres per hour).

In March 2009, Diamond achieved EASA certification for the Austro Engine (AE 300) and started production of the DA 42 NG (Next Generation), a version equipped with 170 hp (127 kW) Austro Engine AE 300 engines. The new engine produces 20% more power and has better fuel economy than the Thieler engines, resulting in a higher gross weight and increased performance. The DA42 NG with Austro Engine engines received FAA certification on April 9, 2010 and Transport Canada certification on April 16, 2012.

More specifications: Features and performance
1 pilot
3 passengers
8,6m (28,1ft)
13,4m (44ft)
2,5m (8,2ft)
Area of wings
16,3 m2 (175.3 ft2)
Empty weight
1.251kg (2.757lb)
Weight with full load
1.700kg (3.747lb)
125 kW (172 HP)

Maximum operating speed: 356 km / h (221 MPH, 192 kt)
Cruising speed: 280 km / h
Reach: 1 693 km (914 nmi; 1,052 mi)
Flying roof: 5,486 m (18,000 ft)
Ascent regime: 6.5 m / s (1,280 ft / min)