Fuel Flow vs Airspeed
Pressure Altitude = 8000 FT
OAT = -1°C

Fuel Flow vs Airspeed
Pressure Altitude = Sea Level
OAT = +35°C

Fuel Flow Vs Airspeed
Pressure Altitude = 2000 FT
OAT = +31°C

Fuel Flow vs Airspeed
Pressure Altitude = 4000 FT
OAT = +27°C

Fuel Flow vs Airspeed
Pressure Altitude = 6000 FT
OAT = +23°C

Fuel Flow vs Airspeed
Pressure Altitude = 8000 FT
OAT = +19°C

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Cost of Operations

Introduction
Bell Helicopter Textron’s cost of operations data for current production helicopters is based on information from Bell operators and service facilities. BHT’s Product Support organization accumulates cost data from a diverse group of operators - large, small; sub-polar, subtropical; inland, coastal; corporate, charter. This information is analyzed to generate sample data for each production model which are averages of the .eld experience. BHT intends to continue monitoring actual costs to enable annual updates of the data to maintain its currency.
The following discussion is provided to review the variables involved in the helicopter’s direct and indirect cost of operations as well as its cost of ownership.
The total cost of helicopter ownership and operation involves both direct and indirect costs. The direct costs are those which are incurred essentially by the .ight hour and include:
.
 Fuel, Lubricants

.
 Basic Airframe Maintenance

.
 Powerplant Maintenance

The indirect costs are not directly dependent upon the number of hours .own and include:
.
 Insurance

.
Facilities (hangar, workshop, etc.)

.
 Crew Compensation

.
Financial Factors (depreciation, investment tax credit, .nancing costs, etc.)

Sample direct operating cost data is available for each current production model. Detailed estimates for total costs relating to speci.c operations are available through the BHT regional marketing manager or corporate of.ce using input data supplied by customer/prospect.
Direct Costs
Fuel, Lubricants
A typical average value of fuel and lubricant costs is included in the sample data provided for each model. Fuel consumption depends upon speed, temperature, externally-mounted accessories, sling loads, etc. A band of approximately 10% more or less than sample value will cover these factors for normal operations. Fuel pricing varies considerably based on where the fuel is purchased geographically and whether it is purchased retail or in bulk. The sample cases use average retail purchase price prevalent at the time of the sample data are prepared.