Eagle 407HP takes Nevada Dept of Wildlife hot and high

Nevada Department of Wildlife goes hot and high with "amazing" Eagle 407HP


The Nevada Department of Wildlife was looking to replace its aging helicopters with a new aircraft that would enable it to expand its mission profiles.

The Department selected the Eagle 407HP, powered by Honeywell's HTS900 turboshaft engine. The HTS900 provides a 22 percent increase in shaft horsepower (shp), an addntional 500lbs of payload and 17 percent lower fuel burn over the standard Bell 407.

Chief Pilot, Greg Smith, who has been flying for 28 years, says of the Eagle 407HP, "The numbers are phenomenal, the workmanship amazing and the performance top shelf".


The Department is the state agency responsible for the restoration and management of fish and wildlife resources, as well as the promotion of boating safety on Nevada's waters. The Department has seven divisions - law enforcement, game, fisheries, conservation and education, habitat, wildlife diversity and operations - that develop programs and projects and are split over three regions.

In total these cover 176,857 square kilometers of land, 1,073 square kilometers of water and 529 rivers that flow 4,500 kilometers. The Department's eleven state-owned wildlife management areas provide approximately 117,000 acres of wildlife habitat.

Among Nevada's big game are mule deer, pronghorn, bighorn sheep, Rocky Mountain bighorns, California bighorn sheep, Rocky Mountain elk, Rocky Mountain goats and mountain lions.

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The Department takes to the sky to support its mission of protecting, preserving, managing and restoring wildlife and its habitat for aesthetic, scientific, educational, recreational and economic benefits.

"Most of what we're doing is working with biologists who count game," explains Smith. "We'll do game surveys, checking on the numbers and health of herds at different locations around the State. The biologist would be in the front seat, there will be another observer in the back and I'll be flying. We physically go out and count all the animals. That's how they check on the herds and manage the wildlife for the people of Nevada."

Until recently, the Department operated two Bell 206B3 Jet Ranger helicopters, but the Department wanted to replace them with a modern aircraft and technology that would enable it to expand its mission profile, whilst remaining within the Bell Helicopter family of products.

The new helicopter would need to perform well in Nevada's hot and high conditions, which has towering mountain ranges exceeding 3,000 meters above sea level and summer temperatures that often top 38 degrees Celsius.


After evaluating the options, the Department selected the Eagle 407HP, developed by Calgary-based Eagle and powered by Honeywell's groundbreaking HTS900 engine. The HTS900, the result of years of combined effort in conjunction with Bell and Eagle, is the newest addition to Honeywell's family of helicopter engines and incorporates next-generation dual-centrifugal compressor architecture.

This technology increases power output, reduces fuel consumption and allows for future engine growth with the same compressor architecture. The engine utilises a dual-channel full authority digital engine control (FADEC) system to ease pilot workload and to facilitate engine maintenance planning and troubleshooting.

The HTS900 engine's light weight, performance, low-specific fuel consumption (SFC) and on-condition maintenance philosophy combine to reduce helicopter operating costs, increase performance and increase revenue potential.

The Eagle version of the original Bell 407 takes the best of the rock solid airframe and replaces the original Rolls Royce turboshaft engine with the more muscular Honeywell HTO900 power plant. Honeywell's HTS900 delivers game-changing performance and substantial operational efficiency improvements.


Honeywell's 1,020 shp HTS900 turboshaft was developed as a replacement for the 813 shp Rolls Royce 250-C47 that was originally fitted to the Bell 407. Honeywell based the HTS900 engine on a new dual-centrifugal compressor architecture, which allows for higher output with lower fuel consumption. It delivers up to 22 percent more takeoff power and significantly improved hot and high performance, as well as improved payload, speed and operating costs. The Eagle 407HP can lift 800 pounds more than the standard Bell 407.

The new engine provides an improved hover ceiling, with a 19 percent increase in gross weight capability at 10,000 feet and a 40 percent increase in payload at 12,000 feet. Fuel burn is reduced by up to 17 percent, whilst direct maintenance costs are around 12 percent less than those of the original Bell 407, saving on average $18,000 each year.

Maintenance requirements have been significantly eased by reducing the number of mechanical parts. For instance, the use of a ported shroud avoids the need for a surge valve. The use of cooled single-crystal blades means that operators can get 15,000 cycles from this part.

"The numbers are phenomenal, the workmanship is amazing, the performance is top shelf," said Smith. "We are already seeing a reduction in operating costs because of the performance increases."

"We are fortunate that the Director of Wildlife and Nevada Board of Wildlife Commissioners have placed such a high priority on the safety and performance of our flight crew and staff. Honeywell has built a wonderful engine for a wonderful helicopter and we'd like to take it hot and high and see what we can do with it. We'd like to thank Honeywell and Eagle for putting together such a great product for us."

"The Eagle 407HP is a valuable resource to our Department and would not have been made possible without the public and private organisations who have shown their support."