|Bell 412EP of the Los Angeles City Fire Department|
|Role||Multipurpose utility helicopter|
|National origin||United States|
|Primary users||Royal Air Force
See Operators for others
|Number built||Over 869|
|Developed from||Bell 212|
|Variants||Bell CH-146 Griffon|
The Bell 412 is a twin-engine 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.
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 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 (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 upgrades 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
- Bell 412CF (CH-146 Griffon)
- 100 custom built utility transport helicopters for the Canadian Forces and based on 412EP and designated by Bell as 412CF
- Bell Griffin HT1
- Advanced training helicopter based on the Bell 412EP, operated by the Royal Air Force (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 No. 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
- Panha 412EP
- Iranian domestically reverse-engineered version of AB 412EP, which has been in use with Iranian military. 4 of these variant were introduced at October 8, 2016 by Red Crescent of Iran.
The Bell 412 is used by private and commercial operators. It is particularly popular in the oil industries, military and for law enforcement use.
- Australian Helicopters,
- Emergency Management Queensland
- New South Wales Police Force
- Chicago Fire Department
- 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.
On February 6, 2014, a Bell 412 of Panama Public Forces SENAN, crash on Mamsucum, Guna Yala Indian Reserve, killing Lieutenant Agustín Santos and injuring eight others, including SENAN Executive Director Belsio González. Witnesses reported a dense fog with reduced visibility in the area. The aircraft was undertaking anti-drug operations against drug lords and was in pursuit of a high speed boat when it crashed in the jungle.
On April 13, 2014, an Augusta-Bell 412 military helicopter slammed into a hangar and crashed as it took off at Julius Nyerere International Airport, in Dar es Salaam, Tanzania. Occupants including Tanzanian Vice President Mohamed Gharib Bilal and other top government officials narrowly survived the crash.
On March 20, 2016, a Bell 412EP crashed in Poso district (Indonesia) while flying in adverse weather conditions. The helicopter was on a mission to capture the country's most wanted militant when it crashed and burst into flames. The helicopter was carrying 13 soldiers and crew when it went down about 35 minutes after taking off from Poso district's Watutau village, said Maj. Gen. Agus Surya Bakti, the regional military chief overseeing South and Central Sulawesi provinces. All 13 people on board died.
On August 9, 2016, a Griffin HT-1 of the Defence Helicopter Flying School of the Royal Air Force caught fire after making an emergency landing on top of Yr Aran, Wales following a technical problem. All four crew exited safely.
- Crew: 1-2 pilots
- Capacity: up to 13 passengers, maximum external load of almost 6,614 lb (3,000 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-3D or PT6T-3DF 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: 609 mi (up to 980km)
- 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 Helicopter Introduces the Bell 412EPI: Boosts Performance and Reliability" (Press release). Las Vegas, NV: Textron. 4 March 2013. Retrieved 11 March 2016.
- Bell/Agusta Bell 412 – Medium Transport Helicopter, USA/Italy, Aerospace-Technology.com[unreliable source?]
- Model 212 Twin Huey: USN-USMC UH-1N / Model 412. Vectorsite.net, 1 December 2007.
- "World Air Forces 2015". Flightglobal Insight. 2015. Retrieved 4 January 2015.
- "Rossi presentó dos nuevos helicópteros que se incorporarán a la Fuerza Aérea Argentina".
- "Philippines Air Force Takes Eighth, Final Delivery of Bell 412EP". Aviation International News.
- "Introduction (Coast guard, Korea, South), Coast guard". janes.com. Retrieved 17 February 2013.
- "South Korean Coast Guard Bell 412EP". Retrieved 17 February 2013.
- "กองบินตำรวจ ข่าวสารและกิจกรรม".
- "Turkey And Georgia Conducted A Naval Exercise". Retrieved 29 December 2012.
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- "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". BBC News. 6 February 2008. Retrieved 2013-03-18.
- Missing govt chopper supposed to return due to bad weather
- Cadalig, Jane (9 April 2009). "No survivors in chopper crash". Sun.Star. Associated Press. Archived from the original on 10 April 2009. Retrieved 9 April 2009.
- "Cameroon Military aircraft crash report - official version". news.cameroon-today.com.
- "Un muerto y ocho heridos deja caída de helicóptero". Retrieved 2014-02-07.
- "Bilal, Magufuli escape death in copter crash". 14 April 2014.
- "Indonesia helicopter crash: 13 dead, body of a missing soldier discovered". 20 March 2016.
- "RAF helicopter fire on Snowdonia peak after technical problem". 9 August 2016.
- 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.
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