- For an overview of the whole Huey family of aircraft see Bell Huey
|A Bell 412EP of the Los Angeles City Fire Department Air Operations Squadron|
|Role||Multipurpose Utility helicopter|
|National origin||United States / Canada|
|Primary users||Royal Air Force
See Operators for others
|Number built||over 869|
|Developed from||Bell 212|
|Variants||Bell CH-146 Griffon|
Design and development
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.
The 412 model was followed by the 412SP (Special Performance) version featuring larger fuel capacity, higher takeoff weight and optional seating arrangements. 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. In 2013 Bell introduced the 412EPI which includes an electronic engine control (a.k.a. FADEC) for a PT6T-9 engine upgrade, and a glass cockpit display system similar to the Bell model 429. Also featured is a Garmin touch-screen navigation system, and the BLR Strake and Fast Fin upgades for improved hover performance.
Over 700 Model 412s (including 260 by AgustaWestland) have been built.
- Bell 412
- Standard Model with P&WC PT6T-3B
- 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 412EP
- Enhanced performance version with P&WC PT6T-3DF engines
- Bell 412EPI
- Glass cockpit version with P&WC PT6T-9 electronic controlled engines
- Military 412
- Armed military version.
- CH-146 Griffon
- Utility transport helicopter for the Canadian Forces.
- Bell Griffin HT1
- Advanced training helicopter based on the Bell 412EP, operated by the RAF since 1997 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 84 Squadron RAF since 2003 at RAF Akrotiri in Cyprus.
- Agusta-Bell AB 412
- Civil utility transport version, built under license in Italy by Agusta.
- Agusta-Bell AB 412EP
- Italian-built version of the Bell 412EP.
- Agusta-Bell AB 412 Grifone
- Military utility transport version, built under licence in Italy by Agusta.
- Agusta-Bell AB 412 CRESO
- Italian-built version, fitted with a ground surveillance radar.
- NBell 412
- IPTN's licensed product of Bell 412
The Bell 412 is used by private and commercial operators, it is particularly popular in the oil industries, military and for law enforcement use.
- Delaware State Police
- Los Angeles City Fire Department
- Los Angeles County Fire Department
- Miami-Dade County Fire Department
- New York City Police Department
- Orange County Fire Authority
- San Diego Fire Department
- United States Park Police
Incidents and accidents
On April 4, 1991, a Bell 412 collided with a small plane carrying United States Senator H. John Heinz III, which killed the senator.
On February 6, 2008, a Bell 412 crashed due to a malfunction, killing Major General Javed Sultan, the commanding officer for Kohat garrison, along with two brigadiers and five other military personnel in South Waziristan Agency, Pakistan. 
On April 7, 2009, a Bell 412EP presidential helicopter operated by the Philippine Air Force crashed in bad weather on the slopes of Mount Pulag in Tinoc, Ifugao on a flight from Loakan Airport to Lagawe. All eight on board the helicopter died, including four key aides of President Gloria Macapagal-Arroyo.
On November 22, 2010, a Bell 412 belonging to the Cameroon defense forces crashed en route from Douala to the country's capital Yaounde. According to government sources, the aircraft had 3 crew and 2 passengers. There was one survivor, retired Israeli Special Forces colonel Abraham Avir Silvan who worked as a consultant to the Cameroon government.
On August 3, 2011, a Bell 412 carrying 10 passengers crashed shortly after it took off from Manado, Indonesia at 2:30 p.m. local time. All the passengers worked for Newcrest Mining. The Bell 412 was bound for the Gosowong gold mine on the nearby island of Halmahera. There was a lone survivor, but he died later. Bad weather was blamed for the crash.
- Crew: 1-2 pilots
- Capacity: up to 13 passengers, maximum external load of 4,500 lb (2,040 kg)
- Length: 56 ft 1 in (17.1 m)
- Rotor diameter: 46 ft (14.0 m)
- Height: 15 ft (4.6 m)
- Disc area: 1,662 ft² (154.4 m²)
- Empty weight: 6,789 lb (3,079 kg)
- Max. takeoff weight: 11,900 lb (5,397 kg)
- Powerplant: 2 × Pratt & Whitney Canada PT6T-3BE Twin-Pac turboshafts, 900 shp (671 kW) each
- Fuselage length: 43 ft (13.1 m)
- Maximum speed: 140 knots (161 mph, 259 km/h)
- Cruise speed: 122 knots (140 mph, 226 km/h)
- Range: 402 nmi (463 mi, 745 km)
- Service ceiling: 20,000 ft (6,096 m)
- Rate of climb: 1,350 ft/min (6.86 m/s)
- Power/mass: 0.2663 hp/lb (437 W/kg)
- Related development
- Related lists
- Bell 412. Airliners.net
- Bell/Agusta Bell 412 – Medium Transport Helicopter, USA/Italy, Aerospace-Technology.com
- Model 212 Twin Huey: USN-USMC UH-1N / Model 412. Vectorsite.net, 1 December 2007.
- "World Air Forces 2013". Flightglobal Insight. 2013. Retrieved 17 March 2013.
- Argentina; MoD orders new and used Bell-412 helicopter - Dmilt.com, May 16, 2013
- "WORLD AIR FORCES 2011/12". Flightglobal Insight. 2013. Retrieved 17 March 2013.
- "Defense New Indonesia". armyrecognition.com. Retrieved 17-March-2013.
- Hoyle Flight International 13–19 December 2011, p. 45.
- "PAF Home". Retrieved 28-December-2012.
- "Introduction (Coast guard, Korea, South), Coast guard". janes.com. Retrieved 17-February-2013.
- "South Korean Coast Guard Bell 412EP". Retrieved 17-February-2013.
- "Turkey And Georgia Conducted A Naval Exercise". Retrieved 29-December-2012.
- "Bolivarian Armada of Venezuela". ©Copyright 2012 helis.com. Retrieved 28-December-2012.
- "Air Ambulance Helicopters - Ambulance Victoria". ©Copyright 2013 Ambulance Victoria. Retrieved 25-March-2013.
- "Queenslanders Gov.t Fleet". qld.gov.au. Retrieved 10-April-2013.
- "PF tem mais dois helicópteros que não levantam voo há quase dois anos". CorreioBraziliense.com.br. Retrieved 11-November-2013.
- "Czech-Republic Police". ©Copyright 2012 Helis.com. Retrieved 29-December-2012.
- "Agusta AB-412 in Carabinieri". Retrieved 01-January-2013.
- "AB-412 Guardia di Finanza". Retrieved 01-January-2013.
- "Delaware Marks 40 Years of Service". © Copyright 2010 by the Airborne Law Enforcement Association. Retrieved 30-December-2012.
- "LAFD Air Ops". Retrieved 30-December-2012.
- "L.A. County Fire". Retrieved 30-December-2012.
- "Miami-Dade-Fire-Rescue". © 2012 Miami-Dade County.gov. Retrieved 30-December-2012.
- "NYPD Bell 412". ©Copyright 2012 Helis.com. Retrieved 30-December-2012.
- "Orange County Fire Authority's New Bell 412 Fire and Rescue Helicopters". ©Copyright 2012 FDNNTV.com. Retrieved 30-December-2012.
- "San-Diego-Fire signs for Bell-412". 2012 Copyright Shephard Press Limited. Retrieved 28-December-2012.
- "Bald Eagle Rescue is a team effort". Retrieved 31-December-2012.
- "Kohat GOC, six other officers die in copter crash: Technical fault caused accident: ISPR". Dawn. Retrieved 15 June, 2013.
- "General killed in Pakistan crash". Retrieved 2013-03-18.
- Missing govt chopper supposed to return due to bad weather
- No survivors in chopper crash
- Frawley, Gerald. The International Directory of Civil Aircraft, 2003/2004, p. 45. Aerospace Publications, 2003. ISBN 1-875671-58-7.
- . Bell Helicopter, January 2006.
- Hoyle, Craig. "World Air Forces Directory". Flight International, Vol. 180 No. 5321, 13–19 December 2011. pp. 26–52.
|Wikimedia Commons has media related to Bell 412.|
- Bell 412 page
- Bell 412 page and Bell 412 photos on airliners.net
- Bell / Agusta 412 page on aerospace-technology.com
- Bell 412EPI Utility Helicopter(Air recognition)
- "Bahrain Requests 6 Bell 412", DefenseIndustryDaily.com
- US donated two Bell 412 EP helicopters to Pakistan
- BlueSkyRotor.com- performance datasheet of Bell 412 EP