Light Twins: Performance versus Cost

[Chopper Jog]

Assistance Required:

I am looking for a comparison between a couple of light twin helicopters (AS355N, B105, BK117, A109 any other suggestions??) to operate offshore up to about 15nm. I have searched the web, but was unable to gather sufficient information.

Could any operator flying these models, provide me with some performance/hourly rate figures? Below is the requested format. Alternatively, contact me via a private message.

Regards,

Chopper Jog


Weights:

Max Gross Weight (internal load)
Max Gross Weight (external load)
Basic Empty Weight
Max Sling Load

Engine Ratings:

Take Off Power
Max Continuous Power
OEI Max Contingency (2.5 min)
OEI Max Continuous Power

Fuel Capacity:

Mains
Aux Tanks
Total

Seating:

Crew (VFR/IFR)
Passengers

Dimensions:

Overall Length (Rotors turbing)
Overall Length (Rotors stopped)
Maximum Height
Main Rotor Diameter
Tail Rotor Diameter

Performance:

Vne
Max Cruise Speed
Max Rate of Climb
Hovering IGE
Hovering OGE
Max Service Ceiling
OEI Max Service Ceiling
Max Range (*)
Max Endurance (*)

Operating Costs:

Hourly Rate on Contract
Adhoc Rate
Standing Charges (On Standby)

[Thomas coupling]

BK117 isnt a light twin, its >3 tonnes.

[Chopper Jog]

I should have specified the following light twins <5700kgs

Lets try again!!

[catseye]

the real question

From the nature of your questions I suspect you are a fixed wing person trying to cover a rotary question.

The more appropriate method may be to define what you want to do then seek the input. For example is it a pax operation, sar, ems or dropping divers on a reef??????

From the many participants in this forum you will then get the right information.


The Eye

[belly tank]

Chopper Jog,

For the stats you are looking for you could always try the manufacturers websites, they usually have spec info on their aircraft. i know bell, and EC do anyway