R44 Raven II / Clipper II

The Hydraulically Boosted Controls on the R44 Raven II assist the pilot in controlling the helicopter's flight surfaces, such as the cyclic, collective, and tail rotor by significantly reducing the manual force required to operate the controls. They enable for more precise and smoother control inputs, improving the overall handling characteristics of the helicopter. Enhanced control responsiveness contributes to the overall safety of helicopter operations, particularly during critical phases of flight such as takeoff, landing, and emergency maneuvers.

The R44 Raven II features a Crashworthy Fuel System with a Bladder Tank designed to prevent fuel leakage and reduce the risk of fire in the event of a crash. The system incorporates several features and design elements to enhance safety for both the helicopter and its occupants. The R44's fuel tank is constructed of an aluminum enclosure containing a flexible, puncture- and tear-resistant bladder that can withstand significant impact without rupturing. Additionally, the fuel system includes flexible joints or self-sealing breakaway couplings that absorb energy and prevent breakage. These are designed to disconnect safely and seal off the fuel line if excessive force is applied, preventing fuel spillage.

Our patented cyclic design enhances safety, comfort, and ease of operation by minimizing flight control interference, ensuring consistent handling across Robinson models, and reducing pilot fatigue. Its streamlined design eliminates the need for separate cockpit controls, simplifying operation and maintenance.

The standard 8-hole panel instrument panel includes standard primary flight instruments (vertical speed indicator, airspeed indicator, engine and rotor dual tachometer, altimeter, and torque meter) and accommodates up to three optional instruments.

The helicopter’s Rotor Brake allows the pilot to stop the rotor quickly, reducing shutdown time and risk of injury to ground personnel and passengers.

The RPM Governor monitors the rotor and engine's RPMs and adjusts them to keep the rotor's RPM constant. This allows the pilot to maintain the rotor's RPM in the green at all times during flight without having to make throttle adjustments. 

The 4K Ultra HD (3840 x 2160 pixels) video camera records video, intercom audio, radio communications, and GPS position to a removable 128 GB USB flash drive. Recording starts automatically when the helicopter is turned on and stops when it is turned off.  Recording video and/or audio to the flash drive can be independently controlled with separate switches.

The Raven II/Clipper II has four 3-Point Seat Belts that are safety harness with three mounting positions and features inertia locking retractors. The retractor provides a snug fit for passenger without being restrictive. The retractor spools freely under normal use, but lockups when a sharp tug or sudden movement occurs. The seat belt is built in a "Y" shaped configuration, and resembles a lap seat belt with the addition of a shoulder harness that helps to restrain the passenger(s) chest, shoulder, and hip in a collision. 

The helicopter is equipped with adjustable tail rotor pedals on the pilot's side, allowing the pilot to customize the pedal position for comfort and optimal control. The pedals can be moved forward or backward to accommodate pilots of different heights and leg lengths, ensuring that the pilot can reach the pedals comfortably and maintain effective control. The adjustable pedals are designed to provide ergonomic comfort, reducing fatigue during extended periods of flight. Adjusting the pedals is easy. The pilot removes a quick-release pin on each side of the pedal then slides the pedal fore or aft to the desired position. Once in place, the pilot reinstalls the quick-release pin to secure the pedals.

Under-Seat Storage Compartments under each seat allows for stowing soft carry-on bags, briefcases, and personal belongings.

A hardpoint is a location on the belly designed to carry an external or internal load.

The Engine Monitoring Unit tracks key engine parameters such as engine-related exceedances and flight data. Also, the Robinson EMU App gives pilots, operators, and maintenance personnel the capability to wirelessly connect to the onboard EMU unit on properly-equipped Robinson R44 helicopters to view certain aircraft performance parameters recorded during operation.

The Raven II features an Annunciator Panel located at the top of the instrument panel and consists of illuminated segments. If a caution or warning condition occurs, the appropriate segment(s) illuminates to indicate the nature of the problem. The annunciator panel includes: HYD, CLUTCH, MR CHIP, TR CHIP, ENGINE FIRE, CARON MONOXIDE, LOW FUEL, LOW RPM, , GOV OFF, MR TEMP, STARTER ON, ENGINE OIL, ALT, FUEL FILTER, AUX FUEL PUMP, and EMU. A test button is located to the right of the annunciator panel that should cause all segments on the panel to light.

The Rotor Brake Engage Light indicates the rotor rotor brake is on.

The Low Rotor RPM Light and Horn indicate rotor RPM is below safe limits. They alert the pilot when the rotor RPM is low and for the pilot to lower the collective to increase rotor RPM. Robinson helicopters now provide the low-RPM horn as an audio alert through audio system rather than instrument-panel-mounted speakers.

The Raven II features a High Rotor RPM Audio Alert that sounds (a warble) in the headsets rather than instrument panel-mounted speakers. Excessive RPM can subject the helicopter to higher stress, vibrations, and heat than they are designed to handle, which can lead to increased maintenance and potential in-flight failure.

Dual Landing Lights are installed in the nose at different vertical angles to increase the lighted area. One landing light switch controls both lights and is located on the cyclic center post.

Panel and Map Lights provide illumination for instruments and consulting navigation charts and flight aids. Instrument lights is active when the nav lights switch is on and the lighting is dimmed via the knob about the nav lights switch. The map light is mounted on a swivel post on the ceiling of the cabin and is controlled by an adjacent switch. 

The Raven II features LED Anti-Collision and Navigation Lights improve the visibility of the helicopter in the air and on the ground. They alert others when the engine is running, starting, or shutting down. A red anti-collision light is installed on the tailcone and is controlled by the strobe switch. Position lights are installed on each side of the cabin and in the tail, and are controlled by the nav lights switch.

The R44 Raven II is equipped with a Carbon Monoxide Detector that monitors the level of carbon monoxide in the cabin. Carbon monoxide is an odorless, toxic gas present in engine exhaust that causes headaches, drowsiness, and possible loss of consciousness. Carbon monoxide may become elevated due to an exhaust leak or exhaust recirculation during prolonged hovering. If the the level of carbon monoxide exceeds the allowable limit, the CARBON MONOXIDE caution light on the annunciator panel will illuminate.

Velour fabric seats are available in tan, gray, and charcoal colors.