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222 nm (256 mi)
365 km
389 km
197 nm (227 mi)
210 nm (242 mi)
Maximum Endurance Sea level 2.4 hr 2.4 hr 2.2 hr 2.2 hr
Maximum Rate of Climb:(TOP) Sea level, Standard
day
ISA +20° C day
9.7 m/sec
8.6 m/sec
1,913 fpm
1,687 fpm
7.9 m/sec
6.5 m/sec
1,546 fpm
1,280 fpm
Maximum Operating Altitude Density Altitude 6097 m 20,000 ft 6097 m 20,000 ft
Service Ceiling ISA 4970 m 16,300 ft 4024 m 13,200 ft
Maximum Hook Capacity 907 kg 2,000 lb 907 kg 2,000 lb
Hovering Performance
In-ground effect
Out-of-ground effect
Standard day
ISA + 20° C day
Standard day
ISA + 20° C day
3901 m
2743 m
2865 m
1707 m
12,800 ft
9,000 ft
9,400 ft
5,600 ft
2835 m
1554 m
1707 m
427
9,300 ft
5,100 ft
5,600 ft
1,400 ft
WEIGHTS
Characteristics Metric Imperial
Maximum Gross Weight Normal Category
External load operations
15191 kg
1746 kg
3,350 lb
3,850 lb
Empty Weight
(configurations)
Standard
Industrial
719 kg
674 kg
1,585 lb
1,486 lb
Useful Load Standard
configuration
Normal Category
External load operations
800 kg
1027 kg
1,764 lb
2,264 lb lb
Industrial
configuration
Normal Category
External load operations
845 kg
1072 kg
1,864 lb
2,364 lb lb
Usable Fuel Capacity 242 L (64 gal) 183 kg 403 lb
POWER PLANT
Characteristics Metric Imperial
Rolls-Royce Model 250-C20R
gas turbine, Rated power:
Rated Power 336 kw 450 shp
Derated for reliability and
safety to:
Takeoff Power
Max. Cont. Power
317 kw
280 kw
425 shp
375 shp
PERFORMANCE SPECIFICATIONS
65
13.1 Hover-In-Ground-Effect.
PERFORMANCE SPECIFICATIONS
66
13.2 Hover-Out of-Ground-Effect.
PERFORMANCE SPECIFICATIONS
67
13.3 Takeoff Gross Weight Worksheet.
C20B Mission #1 Mission #2
Empty Weight
1,585 lb
(719 kg)
Pilot
170 lb
(77 kg)
Fuel
403 lb
(183 kg)
Payload
1192 lb
(540 kg)
Takeoff GW
3,350 lb
(1519 kg)
PERFORMANCE SPECIFICATIONS
68
13.4 Payload vs Range (5,000’, ISA)
PERFORMANCE SPECIFICATIONS
69
13.5 Speed for Best Range
PERFORMANCE SPECIFICATIONS
70
13.6 Speed for Best Endurance
PERFORMANCE SPECIFICATIONS
71
13.7 Fuel Flow, Sea Level, ISA (15°C)
Note: Use for Estimates Only. Not FAA Approved. Based on clean aircraft, level flight performance, minimum specification
engine, particle separator and 10 ampere electrical load.
PERFORMANCE SPECIFICATIONS
72
13.8 Fuel Flow, Sea Level, ISA +20°C (35°C)
Note: Use for Estimates Only. Not FAA Approved. Based on clean aircraft, level flight performance, minimum specification
engine, particle separator and 10 ampere electrical load
PERFORMANCE SPECIFICATIONS
73
13.9 Fuel Flow, 4,000 feet, ISA (7°C)
Note: Use for Estimates Only. Not FAA Approved. Based on clean aircraft, level flight performance, minimum specification
engine, particle separator and 10 ampere electrical load
PERFORMANCE SPECIFICATIONS
74
13.10 Fuel Flow, 4,000 feet, ISA +20°C (27°C).
Note: Use for Estimates Only. Not FAA Approved. Based on clean aircraft, level flight performance, minimum specification
engine, particle separator and 10 ampere electrical load
DIRECT OPERATING COST ESTIMATES
75
14.0 MD 520N® Estimated Direct Operating Cost per Hour (Based upon year 2008US $)
C20R+
Engine
Fuel and Lubricants 1:
Fuel @ $5.80* per gallon @ approx 32 gallons per hour.
Lubricants @ 3% of fuel
Total Fuel ..................................................................................
$ 185.60
$ 5.57
$ 191.16
Airframe Maintenance and Spares2:
Maintenance labor costs:
Scheduled (.15 Manhours/Flight Hours) @ $75.00/Hour*
Unscheduled (.26 Manhours/Flight Hours) @ $75.00/Hour*
Spares Cost:
Scheduled (Inspection) Parts: Used during periodic inspection
i.e. filters, seals, o-rings, etc.......................................................
On-Condition/Unscheduled Part ................................................
Reserves: Component Overhaul (TBO).....................................
Reserves: Limited-Life Parts .....................................................
Total Airframe Cost ...................................................................
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MD500 Series TechDescription Feb09(17)
