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Bell 412

The Bell Model 412 program was announced on 8 September 1978 as a development of the Bell Model 212 (UH-1N). The helicopter is basically a Bell 212 fitted with a new composite four-blade rotor. The development began in the late 1970s with two Bell 212 being converted into 412 prototypes. An advanced four blade main rotor with a smaller diameter replaced the 212's two blade rotor. A Bell 412 prototype first flew in August 1979. The initial model was certified in January 1981 with the deliveries commencing in the same month.

Since its introduction, the Bell 412, the latest civilian derivative of the venerable UH-1 "Huey" military helicopter, has enjoyed unparalleled market acceptance. With its powerful twin engines, wide open cabin and durable construction; the fifteen-seat 412EP has become the rotorcraft of choice for offshore oil support operators, international militaries, emergency medical services, and law enforcement organizations worldwide, and it is the most popular medium twin-engine helicopter available.

Bell says its Model 412 helicopter has become the preferred medium twin helicopter in the offshore oil industry because of its reliability, payload, single engine performance and safety record. This model has the lowest cost of operation of any helicopter in its class with a useful load of 5,039 lbs (2,286kg) making it an excellent helicopter for offshore oil and gas support.

Conditioned for all conditions.From searing desert to polar ice cap, the world's most rugged and reliable medium twin-engine helicopter. A daily workhorse for the most extreme climates on the planet, yet refined in temperament and control. Offering an expansive cabin for flexibility in cargo and personnel, plus dual digital automatic controls for flexibility in future growth.

Proven from the Arctic Circle to the Arabian Gulf, the 412 can operate in conditions that would cripple most other aircraft. It offers the highest dispatch reliability of any twin-engine and is designed with rupture-resistant fuel cells, energy-absorbing crew seats and a resilient fuselage.

On August 3, 2007 the Defense Security Cooperation Agency notified Congress of a possible Foreign Military Sale to Bahrain of Bell 412 Air Search and Recovery Helicopters as well as associated equipment and services. The total value, if all options are exercised, could be as high as $160 million. The Government of Bahrain has requested a possible sale of six Bell 412 Air Search and Recovery Helicopters configured with PT6T-9 engines and electronic engine control, spare and repair parts, publications and technical data, personnel training and training equipment, U.S. Government (USG) support, and contractor representatives' engineering and technical support services, and other related elements of logistics support. The estimated cost is $160 million. Bahrain planned to increase its air mobility capabilities and continue its force modernization program. These defense enhancements promote continued interoperability with U.S. forces, assist in the cooperative defense of neighboring states, and increase Bahrain's capability as a partner in the Global War on Terror. The helicopters would be used for various military operations to include the protection of sovereign borders as well as the protection and defense of U.S. and coalition strategic facilities. The proposed sale of Bell helicopters will greatly enhance Bahrain's military functionality by increasing deterrence capabilities.

In 2004, Pakistan and the U.S. embarked on a long-term $235million project to help build Pakistan's army aviation capability. During the first phase of the project, Pakistan leased the helicopters while the U.S. provided the resources, funding, training, and support to help Pakistan establish a strong and reliable helicopter fleet. The United States has made available to Pakistan a wide variety of top-of-the-line military equipment hitherto considered politically sensitive. Army equipment delivered or in the pipeline as of 2007 included 26 Bell 412 helicopters; 20 AH-1F Cobra attack helicopters and modernization of Pakistan's existing Cobra fleet.

A Major Crown Project was established to acquire 100 Bell-412 helicopters. Designated as the CH-146, Griffon, CFUTTH helicopter replaced the CH-118 Iroquois, the CH-135 Twin Huey and the CH-136 Kiowa. The helicopters are used in three areas of operations: as part of the Special Emergency Response Team; in base rescue; and for tactical transport requirements. They are located at nine locations throughout Canada and have been deployed in numerous operations, such as Haiti, Honduras, Kosovo and presently Bosnia. Bell-Textron/Canada is under contract to provide Total System Performance Responsibility for the CH-146 Griffon helicopter. The Contractor's inventory system, Customer On-Line Ordering Processing (CO-OP), has been established at all CH-146 Squadrons and administration locations and is operated by DND trained personnel. They have visibility to Bell's four main Supply Centers (Fort Worth, Calgary, Amsterdam and Singapore). These personnel perform all aspects of inventory management such as spares acquisition, warehousing, stocktaking, shipping, receiving, etc. The Contractor is responsible for the maintenance of the communication lines at each of these locations excluding deployed operations. The 412 model was followed by the 412SP (Special Performance) version featuring larger fuel capacity, higher takeoff weight and more optional seating arrangement. In 1991, the 412HP (High Performance) variant with improved transmission replaced the SP version in production. The current production version, 412EP (Enhanced Performance), is equipped with a dual digital automatic flight control system. Over 700 Model 412s (including 260 by AgustaWestland) have been built and in operation. The helicopter is produced under license in Italy by Augusta as the AB-412 and in Indonesia by IPTN as the NBell 412. Bell built the helicopter in Canada for the Canadian Armed Forces as the CH-146 Griffon.

The Bell 412EPI has the impeccable reputation of reliability in some of the most extreme climates. Its versatile cabin accommodates an array of options to suit any specific mission needs. With its Bell BasiX ProTM Integrated Avionic System, pilots are provided increased situational awareness and safety features. The Bell 412EPIs Pratt & Whitney PT6T-9 Twin Pac engines deliver enhanced hot-high performance and improved Category A/JAR OPS PC1 performance. Additonally, with the Bell 412EPI the takeoff capability is enhanced with 600+ lbs capability while decreasing the required minimum helipad size to 60 ft. in diameter.




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