Light Twins: Performance versus Cost
 

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)

BK117 isnt a light twin, its >3 tonnes.

I should have specified the following light twins <5700kgs

Lets try again!!

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

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