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R66 Turbine

R44 Series
R44 Raven/Clipper Series Helicopters
Robinson's R44 Raven Series Helicopters provide excellent reliability, responsive handling, and altitude performance, making the R44 the ideal helicopter for private, business, and utility applications.

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.

Equipped with a Lycoming O-540 carbureted engine, the R44 Raven I offers a balance between performance and affordability. Raven I features carburetor heat assist that enhances safety and reduces pilot workload by automatically adjusting carburetor heat in response to power changes by the pilot.

Engine Type Lycoming O-540, six cylinder, carbureted Lycoming IO-540, six cylinder, fuel injected
Horsepower Derated to 225 for takeoff and 205 continuous Derated to 245 for takeoff and 205 continuous
Max Gross Weight 2400 lb (1089 kg) 2500 lb (1134 kg)
Approximate Empty Weight
(including oil & std avionics)
1437 lb (652 kg) 1495 lb (678 kg)
Standard Fuel (29.5 gal) 177 lb (80 kg) 177 lb (80 kg)
Auxiliary Fuel (17.0 gal) 102 lb (46 kg) 102 lb (46 kg)
Passengers and Baggage
with Standard Fuel
786 lb (357 kg) 828 lb (376 kg)
Cruise Speed* up to 113 kts (130 mph) up to 116 kts (135 mph)
Maximum Range (no reserve)* approx 300 nm (350 sm) approx 300 nm (350 sm)
Hover Ceiling IGE @ Gross Weight 6400 ft 8950 ft
Hover Ceiling OGE @ 2300 lb 4000 ft 7500 ft
Rate of Climb over 1000 fpm over 1000 fpm
Maximum Operating Altitude 14,000 ft 14,000 ft
Electrical System 14 volt 28 volt
Air Conditioning not available optional