R44 HELICOPTERS
Robinson R44 Cadet · Specifications
Overview
This document provides specifications for the Robinson R44 helicopter series, with a focus on the R44 Cadet model. It outlines the features, performance metrics, and operational capabilities of the R44 Cadet, as well as comparisons with other models in the R44 lineup, such as the Raven I and Raven II. The document is intended for pilots and aviation enthusiasts seeking detailed technical information about the R44 Cadet's design, engine specifications, weight limits, and performance characteristics. It also includes maintenance intervals and warranty information relevant to the R44 series.
- Maximum gross weight: 2200 lb (998 kg)
- Empty weight: 1437 lb (652 kg)
- Cruise speed: Up to 107 knots (198 km/h)
- Hover ceiling IGE: 8750 ft at 2200 lb
- Time between overhaul (TBO): 2400 hours or 12 years
Document
Source
Originally published by www.sloanehelicopters.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Specifications
- Year
- 2022
- Pages
- 2
- File size
- 1.4 MB
- Publisher
- www.sloanehelicopters.com
Specifications & performance
Extracted from this document.
Specifications
- Range (nm)
- 300
- Engine (hp)
- 245
- Engine model
- IO-540
- Max speed (kt)
- 109
- Cruise speed (kt)
- 109
- Empty weight (lb)
- 1,505
- Fuel capacity (gal)
- 29.5
- Rate of climb (fpm)
- 1,000
- Service ceiling (ft)
- 14,000
- Max takeoff weight (lb)
- 2,500
Weight & balance
- Useful load (lb)
- 995
- Basic empty weight (lb)
- 1,505
- Max takeoff weight (lb)
- 2,500
Common. Rarer than 10% of the aircraft models we track.
Most owners only have the POH. Here's the essential set for the Robinson R44 Cadet.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins
- Type Certificate (TCDS)
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- Type Certificate Data Sheet (TCDS)Type Certificate
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- R44 SERVICE BULLETIN SB-114Service Bulletins
- Performance Data for the Robinson R44 CadetPerformance
- Type Acceptance Report TAR 3/21B/28 — R44 SeriesOther Documents
- R44 SERVICE BULLETIN SB-112CService Bulletins
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In this document
Engine Specifications
The R44 Cadet is powered by a Lycoming O-540, six-cylinder, carbureted engine. It is derated to 210 horsepower for takeoff and 185 horsepower for continuous operation, providing a balance of performance and efficiency.
Weight and Capacity
The maximum gross weight of the R44 Cadet is 2200 pounds (998 kg), with an empty weight of approximately 1437 pounds (652 kg). The standard fuel capacity is 29.5 gallons, weighing 177 pounds (80 kg), and it has an auxiliary fuel capacity of 17.0 gallons, weighing 102 pounds (46 kg).
Performance Metrics
The R44 Cadet can achieve a cruise speed of up to 107 knots (198 km/h) at maximum gross weight. It has a hover ceiling of 8750 feet (2676 m) in ground effect (IGE) and 5250 feet (1600 m) out of ground effect (OGE) at a weight of 2200 pounds.
Time Between Overhaul (TBO)
The R44 Cadet has a time between overhaul (TBO) of 2400 hours or 12 years, whichever comes first. This is an important consideration for maintenance planning and operational longevity.
Warranty Information
All R44 helicopters, including the Cadet, come with a two-year or 1000-hour limited warranty, ensuring coverage for initial operational issues.
Safety notes
- Ensure compliance with weight limits to maintain performance and safety margins.
- Regular inspections are required to adhere to TBO guidelines.
Full document text
Versatility, reliability, and simplicity have made the R44, the helicopter of choice for pilots around the globe R44 HELICOPTERS The exceptionally reliable and easy to maintain R44 has become the helicopter of choice throughout the world. R44s have a two-bladed rotor system, T-bar cyclic, and a crashworthy fuel system. Hydraulically boosted controls provide responsive handling by eliminating cyclic and collective feedback forces. Robinson offers three versions of its best-selling helicopter, each designed to meet the diverse needs of the helicopter industry. R44 RAVEN II The Raven II has a 2+2 configuration and is powered by Lycoming’s IO-540 fuel injected engine, delivering improved altitude performance and increased pay- load, without the need for carburetor heat. R44 RAVEN I The Raven I has a 2+2 configuration and is powered by Lycoming’s O-540 carbureted engine with carbu- retor heat assist, delivering performance and affordability. R44 CADET The Cadet has the same airframe, rotor system and O-540 engine as the Raven I. The differences are the Cadet has a 2+Cargo configuration, its maximum gross weight is 2200 pounds, and its engine is derated to 210 take-off and 185 continuous. The lower weight and derated power provide increased performance margins at high altitudes and extend the time between overhaul to 2400 hours. R44S WITH FLOATS Clippers I and II are Ravens with extra corrosion protection and equipped with floats for over-water operations. Fixed utility floats, which remain fully inflated, are available on both Clippers and the Cadet. Pop-out floats, which inflate within 2-3 sec- onds of activation, are available only on Clipper IIs. SPECIFICATIONS R44 Raven II / Clipper II R44 Raven I / Clipper I R44 Cadet / Cadet with Floats Engine Lycoming IO-540, six cylinder, fuel injected Lycoming O-540, six cylinder, carbureted Lycoming O-540, six cylinder, carbureted Horsepower Derated to 245 hp for takeoff and 205 hp continuous Derated to 225 hp for takeoff and 205 hp continuous Derated to 210 hp for takeoff and 185 hp continuous Max. Gross Weight 2500 lb (1134 kg) 2400 lb (1089 kg) 2200 lb (998 kg) Empty Weight Approx. (including oil and standard avionics) Raven II: 1505 lb (683 kg) Clipper II Pop-out: 1570 lb (712 kg) Raven I: 1450 lb (658 kg) Clipper I: 1500 lb (680 kg) Cadet: 1437 lb (652 kg) Cadet w/ Floats: 1487 lb (674 kg) Standard Fuel Capacity / Weight 29.5 gal capacity / 177 lb (80 kg) 29.5 gal capacity / 177 lb (80 kg) 29.5 gal capacity / 177 lb (80 kg) Auxiliary Fuel Capacity / Weight 17.0 gal capacity / 102 lb (46 kg) 17.0 gal capacity / 102 lb (46 kg) 17.0 gal capacity / 102 lb (46 kg) Pilot, Passenger, and Baggage (with standard fuel) Raven II: 818 lb (371 kg) Clipper II Pop-out: 753 lb (342 kg) Raven I: 773 lb (351 kg) Clipper I: 723 lb (328 kg) Cadet: 586 lb (266 kg) Cadet w/ Floats: 536 lb (243 kg) Cruise Speed at Max. Gross Weight Raven II: Up to 109 kts (202 km/h) Clipper II Pop-out: Up to 106 kts (196 km/h) Raven I: Up to 108 kts (200 km/h) Clipper I: Up to 101 kts (187 km/h) Cadet: Up to 107 kts (198 km/h) Cadet w/ Floats: Up to 100 kts (185 km/h) Max. Range (no reserve) approx 300 nm (550 km) approx 300 nm (550 km) approx 300 nm (550 km) Hover Ceiling IGE 8950 ft at 2500 lb 6400 ft at 2400 lb 8750 ft at 2200 lb Hover Ceiling OGE 7500 ft at 2300 lb 4000 ft at 2300 lb 5250 ft at 2200 lb Rate of Climb Over 1000 fpm Over 1000 fpm Over at 1000 fpm Max. Operating Altitude 14,000 ft 14,000 ft 14,000 ft Electrical System 28 volt 28 volt 28 volt SERVICE AND TIME BETWEEN OVERHAUL (TBO) No scheduled maintenance is required between 100-hour inspections. The engine and airframe TBO for Ravens is 2200 hours or 12 years whichever occurs first. The engine and airframe TBO for Cadets is 2400 hours or 12 years whichever occurs first. All life limited components have approved service lives of at least 2200 hours. WARRANTY All R44 helicopters come with two-year or 1000-hour limited aircraft warranty. FEB 2022
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