Bell 412
Template:Short description Template:DMCA Template:DMCA Template:Infobox aircraft
The Bell 412 is a utility helicopter of the Huey family manufactured by Bell Helicopter. It is a development of the Bell 212, with the major difference being the composite four-blade main rotor. It is a twin-turbine helicopter that has been popular on the civilian and military markets, and major users include Canada, Italy, and Japan. Several hundred have been produced since its introduction in 1979, and several iterations of upgrades and variations have been produced, such as with upgraded cockpit electronics.
It has been manufactured under license by Agusta in Italy as the Agusta-Bell AB412, in Indonesia by Indonesian Aerospace, and in Japan by Fuji Heavy Industries. The CH-146 Griffon, a Bell 412 variant for the Canadian Armed Forces, is manufactured in Bell-Textron's main commercial factory in Mirabel, Quebec.
Design and development
Development began in the late 1970s, with two Bell 212s 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 deliveries commencing in the same month.[1] The 412 model was followed by the 412SP (Special Performance) version, which featured a larger fuel capacity, a higher takeoff weight, and optional seating arrangements. In 1991, the 412HP (High Performance) variant with improved transmission replaced the SP version in production.[1]
In the early 2000s, Bell offered the Bell 412EP as its Bell 412 LUH entrant in the U.S. Army Light Utility Helicopter program, where it competed against several other light helicopters for an order.[2]
The current production version, 412EP (Enhanced Performance), is equipped with a dual digital automatic flight control system. In 2013, Bell introduced the 412EPI, which includes an electronic (digital) engine control upgrade for the PT6T-9 engine, and a glass cockpit display system similar to the one installed on the Bell 429. Also featured is a Garmin touchscreen navigation system, plus the BLR Strake and Fast Fin upgrades for improved hover performance.[3]
The helicopter is powered by the Pratt and Whitney Canada twin-pack power plant with two turboshaft engines and has achieved the lowest in-flight shut-down rate of aircraft turboshaft engines. If one engine is shut down, a single engine can produce emergency power for 30 minutes.[4]
The aircraft has been produced in Montreal, Canada, in Italy under license by Agusta, in Indonesia by Indonesian Aerospace, and also in Japan by Subaru (Fuji Heavy Industries).[5] The Bell 412 was also initially manufactured in Texas, USA.[6]
The emergency medical configuration can carry 6 patients/wounded and two attendants, or two stretchers and up to four attendants.[4]
By 2022, over 1,300 Bell 412 helicopters had been delivered.[7]
Variants
- Bell 412
- Standard Model with P&WC PT6T-3B
- Page Template:Visible anchor/styles.css has no content.Bell 412SP
- Special Performance version with P&WC PT6T-3BF engines
- Bell 412HP
- High performance version with P&WC PT6T-3BG or -3D engines
- Bell 412CF (CH-146 Griffon)
- 100 custom-built utility transport helicopters for the Canadian Forces, based on 412EP and designated by Bell as 412CF
- Page Template:Visible anchor/styles.css has no content.Bell 412EP
- Enhanced performance version with P&WC PT6T-3DF engines
- Bell 412EPI
- Glass cockpit version with P&WC PT6T-9 electronic controlled engines
- Bell 412EPR
- Modernization program for Bell 412EP, which includes glass cockpit and new avionics.[8]
- Bell Griffin HT1
- Advanced training helicopter based on the Bell 412EP, operated by the Royal Air Force (RAF) between 1997 and 2018 as an advanced flying trainer. Operated by the Defence Helicopter Flying School at RAF Shawbury and the Search and Rescue Training Unit at RAF Valley.
- Bell Griffin HAR2
- Search and Rescue helicopter based on the Bell 412EP, operated by No. 84 Squadron RAF between 2003 and 2023 at RAF Akrotiri in Cyprus.[9]
- Agusta-Bell AB 412
- Civil utility transport version, built under license in Italy by Agusta.[10]
- Agusta-Bell AB 412EP
- Italian-built version of the Bell 412EP.[10]
- Agusta-Bell AB 412 Grifone
- Military utility transport version, built under licence in Italy by Agusta.[10]
- Agusta-Bell AB 412 CRESO
- Italian-built version, fitted with a ground surveillance radar.
- Bell 412 LUH
- Entry for the U.S. Army Light Utility Helicopter (LUH) program. Lost to the EC145 entry (see UH-72 Lakota)[11]
- IPTN / Indonesian Aerospace NBell 412
- Indonesian Aerospace's (formerly IPTN) licensed product of Bell 412.[10]
- Indonesian Aerospace Gandiwa
- Proposed tandem-seat attack helicopter design based on NBell 412 developed by Indonesian Aerospace and Indonesian Army Research and Development Service in 2012–2014. Development was discontinued due to poor potential sales.[12][13]
- Subaru-Bell UH-2 (Formerly known as UH-X)
- Modified version of the Bell 412 EPI; 150 on order to meet the JGSDF's requirement for a UH-1J replacement.[14][15][16][17]
- Subaru-Bell 412EPX
- Commercial version of UH-X.[18][19]
- H.1B
- (Template:Langx) Royal Thai Armed Forces designation for the Bell 412.[20]
- H.1C
- (Template:Langx) Royal Thai Armed Forces designation for the Bell 412(HP)SP.[20]
- H.1E
- (Template:Langx) Royal Thai Armed Forces designation for the Bell 412EP.[20]
- H.LL.2
- (Template:Langx) Royal Thai Navy designation for the Bell 412.[20]
Operators
The Bell 412 is used by private and commercial operators. It is particularly popular in the oil industries, military, law enforcement, and for medevac use. Around 2022-23, the unit cost for a 412EPX model was between US$14.5 million[21] and US$16 million.[22]
Military operators
- File:Flag of Algeria.svg Algeria
- Algerian Air Force[23]
- File:Flag of Argentina.svg Argentina
- Argentine Air Force[23]
- File:Flag of Australia (converted).svg Australia
- Australian Army : 2 under lease at Army Aviation Training Center.[24]
- File:Flag of Azerbaijan.svg Azerbaijan
- Azerbaijani Air Force[23]
- File:Flag of Bahrain.svg Bahrain
- Bahraini Air Force[23]
- File:Flag of Botswana.svg Botswana
- Botswana Defence Force[23]
- File:Flag of Cameroon.svg Cameroon
- Cameroon Air Force[23]
- File:Flag of Canada (Pantone).svg Canada
- Royal Canadian Air Force
- 3 Canadian Forces Flying Training School (3e École de pilotage des Forces canadiennes)
- Script error: No such module "Labelled list hatnote".
- File:Flag of Chile.svg Chile
- Chilean Air Force[23]
- File:Flag of Colombia.svg Colombia
- Colombian Navy[23]
- File:Flag of Cyprus.svg Cyprus
- Cypriot National Guard[25]
- File:Flag of El Salvador.svg El Salvador
- Salvadoran Air Force[23]
- File:Flag of Eritrea.svg Eritrea
- Eritrean Air Force[23]
- File:Flag of Ghana.svg Ghana
- Ghana Air Force[23]
- File:Flag of Guatemala.svg Guatemala
- Guatemalan Air Force[23]
- File:Flag of Guyana.svg Guyana
- Guyana Defence Force[23]
- File:Flag of Honduras (1949–2022, 2026–present).svg Honduras
- Honduran Air Force[23]
- File:Flag of Indonesia.svg Indonesia
- Indonesian Army[23]
- Indonesian Navy[23]
- File:Flag of Italy.svg Italy
- Italian Army[23]
- File:Flag of Iraq.svg Iraq
- 412M on order.[26]
- File:Flag of Jamaica.svg Jamaica
- Jamaica Defence Force[23]
- File:Flag of Japan.svg Japan
- Japan Ground Self Defence Force[23]
- File:Flag of Lesotho.svg Lesotho
- Lesotho Defence Force[23]
- File:Flag of Mexico.svg Mexico
- Mexican Air Force[23]
- File:Flag of Montenegro.svg Montenegro
- Montenegrin Air Force[27]
- File:Flag of Morocco.svg Morocco
- Moroccan Navy[23]
- File:Flag of Nigeria.svg Nigeria
- Nigerian Air Force[23]
- File:Flag of Norway.svg Norway
- Royal Norwegian Air Force[23]
- File:Flag of Pakistan.svg Pakistan
- Pakistan Air Force[23]
- Pakistan Army[23]
- File:Flag of Panama.svg Panama
- National Aeronaval Service of Panama[23]
- File:Flag of Peru.svg Peru
- Peruvian Air Force[23]
- Peruvian Navy[23]
- File:Flag of the Philippines.svg Philippines
- Philippine Air Force[28]
- Philippine Army
- File:Flag of Saudi Arabia.svg Saudi Arabia
- Royal Saudi Air Force[23]
- File:Flag of Slovenia.svg Slovenia
- Slovenian Air Force[23]
- File:Flag of Somalia.svg Somalia
- Somali Air Force[29]
- File:Flag of South Korea.svg South Korea
- South Korean Air Force[23]
- File:Flag of Sri Lanka.svg Sri Lanka
- Sri Lanka Air Force[23]
- File:Flag of Tanzania.svg Tanzania
- Tanzania Air Force Command[23]
- File:Flag of Thailand.svg Thailand
- Royal Thai Air Force[23]
- File:Flag of Tunisia.svg Tunisia
- Tunisian Air Force[23][30]
- File:Flag of Turkey.svg Turkey
- Turkish Coast Guard[31]
- File:Flag of the United Arab Emirates.svg United Arab Emirates
- United Arab Emirates Air Force[23]
- File:Flag of Uruguay.svg Uruguay
- Uruguayan Navy[23]
- File:Flag of Venezuela.svg Venezuela
- Venezuelan Army[23]
- Venezuelan Navy[23]
- Script error: No such module "flag".
- Zambian Air Force[32]
- File:Flag of Zimbabwe.svg Zimbabwe
- Air Force of Zimbabwe[23]
Government operators
- File:Flag of Australia (converted).svg Australia
- Department of Fire and Emergency Services[33][34]
- Emergency Management Queensland[35]
- New South Wales Police Force[36]
- New South Wales Rural Fire Service[37]
- SAAS MedSTAR Retrieval Service[38]
- File:Flag of Brazil.svg Brazil
- Federal Police[39]
- File:Flag of Canada (Pantone).svg Canada
- Canadian Coast Guard[40][41]
- National Research Council[42]
- Surete du Quebec[43]
- File:Flag of Colombia.svg Colombia
- National Police of Colombia[44]
- File:Flag of Croatia.svg Croatia
- Croatian Ministry of Interior[45]
- File:Flag of the Czech Republic.svg Czech Republic
- Police of the Czech Republic[46]
- File:Flag of Finland.svg Finland
- Finnish Border Guard[47]
- File:Flag of India.svg India
- Government of Uttar Pradesh: Operates two Bell 412EP.[48][49]
- File:Flag of Indonesia.svg Indonesia
- Indonesian National Police[50]
- File:Flag of Iran.svg Iran
- Iranian Red Crescent Society[51]
- File:Flag of Italy.svg Italy
- Guardia di Finanza[52][unreliable source?]
- State Forestry Corps[53]
- File:Flag of Japan.svg Japan
- Japan Coast Guard[54]
- Tokyo Metropolitan Police[55]
- File:Flag of South Korea.svg South Korea
- Coast Guard[56][57]
- File:Flag of the United States.svg United States
- Chicago Fire Department[58]
- Delaware State Police[59]
- Los Angeles Police Department[60]
- Los Angeles County Fire Department[61]
- Miami-Dade County Fire Department[62]
- New York Police Department[63]
- Orange County Fire Authority[64]
- San Diego Fire Department[65]
- United States Park Police[66]
- Ventura County Fire Department[67]
- Virginia State Police[68]
- Kern County Fire Department
Former
- File:Flag of the Netherlands.svg Netherlands
- Royal Netherlands Air Force. AB412 helicopters retired from SAR duties in 2015.[69]
- File:Flag of Poland.svg Poland
- Polish Air Force, 1 412HP used 1993–2011[70]
- File:Flag of Slovenia.svg Slovenia
- Slovenian National Police[71]
- File:Flag of the United States.svg United States
- Los Angeles Fire Department[72]
- File:Flag of Uganda.svg Uganda
- Uganda Air Force[73]
- File:Flag of the United Kingdom (1-2).svg United Kingdom
- Royal Air Force
Incidents and accidents
- On April 4, 1991, a Bell 412SP collided in mid-air with a Piper Aerostar over Lower Merion Township, Pennsylvania, during an improvised attempt to inspect the Aerostar's landing gear. The accident killed all five people on both aircraft, including Aerostar passenger and United States senator John Heinz, along with two children on the ground. The collision was attributed to poor judgment by the pilots of both aircraft.[74][75]
- On December 10, 2006, Bell 412SP medical helicopter Mercy Air 2 crashed in mountainous terrain near Hesperia, California. All three crew members on board died. The accident was attributed to controlled flight into terrain in low visibility.[76][77]
- On December 7, 2023, a Bell 412EP operated by the Guyanese military went down carrying 2 crew and 5 senior officers at the border between Venezuela and Guyana during bad weather.[78][79]
Specifications (Bell 412EP)
Data from International Directory of Civil Aircraft,[80] Bell 412EP Product Specifications[81]
General characteristics
- Crew: one-two pilots
- Capacity: up to 13 passengers, maximum external load of almost 6,614 lb (3,000 kg)[82]Template:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convert
- Blade sections: root: Boeing VR-7; tip: Wortmann FX 71-H-080[83]Template:Aircraft specs/engTemplate:Aircraft specs/engTemplate:Aircraft specs/engTemplate:Aircraft specs/lengthTemplate:Aircraft specs/convertTemplate:Aircraft specs/length
PerformanceTemplate:Aircraft specs/speedTemplate:Aircraft specs/speedTemplate:Aircraft specs/speedTemplate:Aircraft specs/speedTemplate:Aircraft specs/speedTemplate:Aircraft specs/rangeTemplate:Aircraft specs/rangeTemplate:Aircraft specs/rangeTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convert
See also
Related development
Related lists
References
Citations
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- ^ Bell/Agusta Bell 412 – Medium Transport Helicopter, USA/Italy Script error: No such module "webarchive"., Aerospace-Technology.com
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Sources
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- Page Module:Citation/CS1/styles.css has no content.Cooper, Tom; Weinert, Peter; Hinz, Fabian; Lepko, Mark (2011). African MiGs, Volume 2: Madagascar to Zimbabwe. Houston: Harpia Publishing. ISBN 978-0-9825539-8-5.
- Hoyle, Craig. "World Air Forces Directory". Flight International, Vol. 180, No. 5321, 13–19 December 2011. pp. 26–52.
External links
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