MD 520N

The MD 520N® is a fast, agile, lightweight, turbine powered, all purpose helicopter. Advanced technology has been used in the design and construction of the aircraft, resulting in excellent speed capabilities, high payload-to-empty-weight ratio, passenger/crew safety and handling and performance capabilities.The MD 520N helicopter has a fully articulated five-bladed rotor system which provides excellent control and maneuverability characteristics. With its advanced NOTAR anti-torque system, The MD 520N is a member of an exclusive class of the safest, quietest helicopters in the world. The MD 520N is certified for single pilot operation under visual flight rules / visual
meteorological conditions. Typical mission applications for the MD 520N helicopter are aerial survey, photography assignments, agricultural, firing fighting, air rescue, police air support, and numerous other missions within the paramilitary, construction, petroleum, and forestry industries.
The NOTAR anti-torque system provides safe, quiet, responsive, foreign object damage resistant directional control. The enclosed variable-pitch composite-blade fan produces a low pressure, high volume airflow to pressurize the composite tail boom. Air is expelled through two slots which run the length of the tail boom on the right side, causing a boundary-layer control that result in the tail boom acting as a wing, flying in the downwash of the rotor system, and producing up to 60-percent of the anti-torque required in a hover. The balance of the direction control is accomplished by a rotating direct jet thruster on the end of the tail boom. The NOTAR system eliminates the mechanical disadvantages of a tail rotor, including long drive shafts, hanger bearings, and gearboxes. It reduces the overall helicopter vibrations, resulting in lowered pilot fatigue and increased passenger comfort. Due to the design of the NOTAR system which eliminates the spinning tail rotor, potential incidents caused by an exposed tail rotor are eliminated. The NOTAR system not only has proven safety margin, it also provides up to a 50-percent reduction in noise over competitor helicopters.

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Maximum Cruise Speed: 245 km/h
Maximum Range: 378 km
Engine: Rolls-Royce 250-C20RTurbine Engine
Height: 9.67 ft 2.92 m
Width: 6.30 ft 1.90 m
Length: 24.90 ft 7.60 m
Main Rotor Diameter: 27.35 ft 8.34 m
Powerplant: Rolls Royce 250-C20R/2 turbine
Number of Seats: Five (5)
Number of Main Rotor Blades: Five (5)
Number of Tail Blades: Not Fitted. NOTAR system used
Number of Baggage Compartments: Belly mounted pod available
Instruments & Avionics: Dual tachometer NR and N2, Engine oil pressure indicator, Engine oil temperature indicator, Engine torque meter, N1 tachometer, Engine chip detector warning light, Engine out warning light, Fuel filter obstruction warning light, Fuel low warning light, Generator out warning light, Fuel quantity indicator, Digital chronometer, Airspeed indicator, Barometric altimeter, DC ammeter, Outside air temperature indicator, Magnetic compass, Turbine outlet temperature indicator, Battery over-temperature warning light, Low rotor rpm warning light, Main transmission chip detector warning light, Main transmission oil pressure warning light, Main transmission oil temperature warning light
Electrical Equipment: Cabin 28-volt utility outlet, External power receptacle, Anti-collision lights (2), Landing light nose mounted, Position lights, 85-amp starter-generator, Battery heavy duty 17 amp-hour battery
Powerplant: Automatic engine re-ignition, Engine anti-ice, Engine wash kit, Facet oil filter
MIscellaneous: Cargo tie-down fittings, Passenger seats with three-point restraint harness, Extended landing gear, Rapid door removal hinges (cockpit and cabin), Tinted canopy windows, Tinted door windows, Fuselage mounting mounts
Comment: This list is not exhaustive but a sample of what is available
Aircraft Equipment: Diamond J turbine outlet temperature indicator, Avionics cooling fan, Right-hand command pilot, Slant panel pedestal, Night vision goggle compatible lighting, Heated pitot tube, Paravion door openers, Comfort windows, Moveable landing/searchlight, Landing light pulse system, Pilot Mason Grip, Generator cooling kit, Engine bay quick release hinges, Exterior crew handles, Air conditioning R-134 w/ forward evaporator, Wire strike protection kit, Twenty-one gallon auxiliary fuel tank, Thirty-three gallon auxiliary fuel tank, High-visibility main rotor blades
Avionics: Blind encoder, Encoding altimeter 3-inch, Garmin G500 system, Radar altimeter w/indicator, Attitude gyro indicator, 3-inch, Directional gyro - panel mounted, Compass system ,Radio magnetic indicator, Various NAV / COM / GPS equipment, Various transponders, Various displays, radios, transceivers, and data links Various audio panels, intercoms, CD/IPAD player, AM / FM radios, Cyclic remote frequency switch, Hand held radio provisions
Flight Equipment: Instantaneous vertical speed indicator, Attitude gyro indicator, 3-inch, Directional gyro - panel mounted, Turn and bank indicator, 2-inch, Turn and bank indicator, 3-inch
Special Mission Equipment: External PA / siren system, Forward looking infrared sensor FLIR, Dual side mount Searchlights, Video turret side mount, Cargo hook, Floats
Max Range: 204 nm 378 km
Max Endurance: 2.4 Hours
Max rate of Climb: 1913 ft/min 9.7 m/sec
Max Operating Altitude: 20000 ft 6097 m
Service Ceiling: 16300ft 4970m
Max Hook Capacity: 2000 lb 907 kg
Hover in Ground Effect (HIGE): 12800 ft 3901 m
Hover Out of Ground Effect: 9400 ft 2865 m
Max Takeoff Gross Weight: 3350 lb 1591 m
MTOGW External Load Operations: 3850 lb 1746 m
Empty Weight (Standard Config): 1585 lb 719 kg
Useful Load: 2264 lb 1027 kg
External Load Operations: 2364 lb 1072 kg
Fuel Capacity: 64 USG 242 Litres
Max Cruise Speed: 128 kt 237 kmh
Max Operating Altitude: 20000 ft 6097 m