During the past 5 years, COULSON's S61 aircraft have flown an average of 5,000 hours each year.
Coulson pilots have extensive helicopter experience in rugged isolated mountainous terrain. The experience and know how involves crew transport, cargo transport and heavy lift with long lines equipped with slings, lanyard chokers or use of a Coulson power actuated grapple attached to a long line.
Each helicopter has a number of discreet specifications. For the purpose of the following, a range will be provided where necessary:
| Fuel type | Jet A-1 or Jet B |
| Fuel capacity | Up to 4000lbs 2160 litres |
| Refuelling time | > 300litre/min |
| Hot fueling suitable | Yes and pressurized |
| Fuel consumption | 670 litre/hr |
| Maximum take off weight | 20500lbs internal/ 22000lbs external |
| Empty weight | 11,900 lbs |
| Rate of Climb at sea level | 2500 ft/min |
| Maximum cruise speed | 131 kts |
| Normal cruise speed | 120 -125kts |
| Normal external cargo speed | N/A 0 to 60 kts |
| Cold start to take off | First start 10 min - subsequent 6 min. |
| Maximum number of passengers | 23 |
| Normal number of passengers | 18 fire fighters and gear. |
| Aircraft tracking system capable | Yes. |
| Communication equipment | As specified by client |
Each helicopter module consists of a fully equipped helicopter, and when specified, a highly mobile full equipped and stocked service van, a 30,000 litre mobile fuel truck with trained operator, all necessary pumping, filtering and Environmental Protection kit. The vehicles can be equipped with mobile telephones and satellite tracking systems as specified by the client. In addition to the normal onboard equipment the helicopter can have available the following:
| Communication and Ancillary Equipment |
Model | Comments |
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Meet specification and has conditional approval of Fire Agencies |
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Suspended from long line Controlled from cockpit 8,000lbs capacity |
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Approved seats to increase PAX capacity to 25 - dependant on Aircraft |
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COULSON can paint or install high visibility marking to regulatory standard |