The high performance R44 Raven II has a Lycoming IO-540 fuel-injected, angle-valve, tuned-induction engine, which eliminates the need for carburetor heat. The standard 28-volt electrical system ensures good starting performance in hot or cold weather, and provides additional electrical power for optional equipment.

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Lycoming IO-540, six cylinder, fuel injected Horsepower continuous Derated to 245 for takeoff and 205 continuous
Max Gross Weight 2500 lb (1134 kg)
Approximate Empty Weight (including oil & std avionics)  1495 lb (678 kg)
Standard Fuel (29.5 gal) 177 lb (80 kg)
Auxiliary Fuel (17.0 gal)  102 lb (46 kg)
Pilot, Passengers and Baggage
with Standard Fuel  828 lb (376 kg)
Cruise Speed* up to  up to 116 kts (135 mph)
Maximum Range (no reserve)* approx 300 nm (350 sm)
Hover Ceiling IGE @ Gross Weight8950 ft
Hover Ceiling OGE @ 2300 lb 7500 ft
Rate of Climb over 1000 fpm
Maximum Operating Altitude 14,000 ft
Electrical System 28 volt