Bell CH-146 Griffon

CH-146 Griffon
A CH-146 Griffon from 430 Tactical Helicopter Squadron during Exercise Patriot 2006.
Role	Utility helicopter
National origin	United States / Canada
Manufacturer	Bell Helicopter
First flight	1992
Introduction	1995
Status	In service
Primary user	Canadian Forces
Produced	1992–97
Number built	100
Developed from	Bell 412

The Bell CH-146 Griffon is a multi-use utility helicopter of the Huey family, designed by Bell Helicopter Textron as a variant for the Canadian Armed Forces of the Bell 412EP. The CH-146 is used in a wide variety of roles, including aerial firepower, reconnaissance, search and rescue and aero-mobility tasks.^[1]

It has a crew of three, can carry up to 10 troops and has a cruising speed of 220–260 km/h (120–140 kn; 140–160 mph).^[2]

Design and development

The CH-146 is the Canadian military designation for the Bell 412CF, a modified Bell 412, ordered by Canada in 1992.^[3] The CH-146 was built at Mirabel, Quebec, at the Bell Canadian plant. They were delivered between 1995 and 1997 in one of two configurations, the Combat Support Squadron (CSS) version for search and rescue missions, and the Utility Tactical Transport Helicopter (UTTH), which carries a crew of three and an eight-man section.^[1]

CH-146 Griffon in SAR markings

The Griffon can be equipped with various specialized bolt-on mission kits, which can enhance the performance of the Griffon, from increasing range, improving protection against enemy fire, etc.^[1]

While the CH-146 can be equipped with a total of 13 seats in the cargo area in addition to the two in the front for the aircrew, weight restrictions usually result in a normal combat load of eight equipped troops or fewer depending on armament and fuel carried. The aircraft can also be configured for up to six stretchers.^[1][4]

Minor disassembly permits transport of the Griffon by CC-130 Hercules or CC-177 Globemaster III aircraft for long-distance deployment.^[1]

Operational history

The first CH-146 Griffon arrives at 417 Squadron, CFB Cold Lake. It is parked on the flight line with the CH-118s it was to replace.

CH-146 Griffon in Afghanistan armed with a Dillon Aero M134D "Minigun"

The Canadian Forces purchased 100 aircraft^[3] and received them in 1995–1997.^[2][4] In 2005, nine CH-146s were sold to the Allied Wings consortium to be used as trainers at 3 Canadian Forces Flying Training School.^[5]

Canada

The CH-146 Griffon have been deployed in various operations in Canada since their introduction in 1995. They have been deployed during the Operation Saguenay in 1996 and Operation Assistance in 1997. The CH-146 have also played a major role during the great ice storm of 1998.^[6] They were deployed during the 28th G8 summit and 36th G8 summit. They were also deployed to secure the 2010 Winter Olympics during the Operation Podium.^[7] In May 2016, four Griffons were deployed as part of Operation LENTUS 16-01, to provide emergency services for victims of the 2016 Fort McMurray wildfire.^[8]

Haiti and Balkans

The CH-146 have been deployed in Haiti. They were deployed during the Operation Standard and Operation Constable between 1996 and 1997.^[9][10] They were deployed more recently during the Operation Halo in 2004 and Operation Hestia in 2010.

The Griffon have been deployed in Bosnia and Kosovo during the Operation Kinetic between 1999 and 2000 and Operation Paladum between 1998 and 2004.^[11]

Afghanistan

In 2007, the Canadian American Strategic Review suggested the Canadian Forces consider deploying Griffons to Afghanistan, because they were comparable to some helicopters deployed by the United States Marine Corps.^[12]

On 26 November 2008, the Canadian Forces announced by a statement that 8 Griffons would be modified to act as armed escorts for CH-147 Chinook helicopters in Afghanistan.^[13][14][15] Equipped with a M134D mini gun, the helicopters were employed in a defensive and support role, including the evacuation of battlefield casualties.^[16] The eight CH-146s arrived at Kandahar International Airport on 20 December 2008.^[17]

Suitability for role

The CH-146 was purchased by the CF to replace four existing helicopters, the CH-136 Kiowa in the observation role, the CH-135 Twin Huey in the army tactical role, the CH-118 Iroquois in the base rescue role and the heavy lift CH-147 Chinook. From the time of its purchase defence analysts have been critical of the aircraft pointing to its procurement as politically motivated and that the aircraft cannot adequately fill any of its intended roles. It has been termed "a civilian designed and built aircraft, with only a coat of green paint."^[18][19]

Writing in 2006 defence analyst Sharon Hobson said:

The Griffon helicopter has become almost a laughing stock. It is underpowered for the transport role the army needs it to play, and it’s too big for a reconnaissance role. At a time when the Canadian Forces are thirsting for equipment, it’s telling that about 20 of the Griffons have been parked.^[18]

The CH-146 was ruled out for the Afghan mission by General Rick Hillier when he was Chief of Defence Staff in 2008 due to being underpowered. It has also been criticised for being underpowered by Martin Shadwick, a defence analyst and professor at York University. Shadwick stated in July 2009:^[20]

Its engines are fine for most domestic requirements in Canada and a more moderate temperature, but [the Griffon] doesn't really have the horsepower to reach its full potential in a place like Afghanistan.^[20]

At the inquest into the death of Capt Ben Babington-Browne (killed on 6 July 2009 in the crash of aircraft #146434), Lt Cdr William Robley of the UK Defence Helicopter Flying School confirmed that operating the aircraft at that altitude, temperature and weight meant that it was not the correct helicopter for that mission. When asked by the coroner: "Had you been there, would it have been obvious to you of the risks attached to using the Griffon helicopter in these conditions?" Lt Cdr Robley replied: "Yes." When asked: "Would you expect a competent pilot to have understood that this was not the correct helicopter for the mission?", Lt Cdr Robley replied: "It depended on the pilot's training; unless they have been trained, they are on a voyage of discovery."^[21]

Retired Lieutenant General Lou Cuppens defended the aircraft's performance:

When the discussions took place about Afghanistan it was very quickly determined that when you do the weather analysis, that the aircraft could not carry the same combat load of troops that it could in Canada and land in a temperate climate. But all you do then is, you use more of them to do the same mission. Looking at operations that we've done elsewhere in the Middle East, with similar aircraft, they all have limitations of some sort and you work with the limitations."^[20]

Defence Minister Peter MacKay also defended the aircraft:

I believe the Griffon is a superior helicopter, well-maintained, it's a utility helicopter that serves our interests both in Afghanistan and for purposes here in Canada.^[20]

Future

The CH-146 Griffon is forecast to be retired in 2021. Bell Helicopter Textron Canada Inc. was awarded a C$640 million contract to overhaul and repair the CH-146 fleet until retirement in 2021. The contact includes options to extend the contract up to 2025 if necessary.^[22][23]

Operators

U.S. Army National Guard paratroopers from 2nd Battalion, 20th Special Forces Group and 116th Air Support Operations Squadron board a CH-146 Griffon.

 Canada

• Royal Canadian Air Force ^[24]

Tactical Helicopter role

• 400 Tactical Helicopter Squadron^[25]
• 403 Helicopter Operational Training Squadron^[26]
• 408 Tactical Helicopter Squadron^[27]
• 427 Special Operations Aviation Squadron^[28]
• 430 Tactical Helicopter Squadron^[29]
• 438 Tactical Helicopter Squadron^[30]

Search and Rescue role

• 424 Transport and Rescue Squadron^[31]

Combat Support Squadrons

• 417 Combat Support Squadron^[32]
• 439 Combat Support Squadron^[33]
• 444 Combat Support Squadron^[34]

Accidents and incidents

• On 18 July 2002, #146420 operated by 444 Sqn crashed north of CFB Goose Bay while returning from a search and rescue mission that had been called off. Both pilots were killed on impact and the SAR Technician and Flight Engineer were both seriously injured. The cause of the crash was the loss of the aircraft tail rotor after a tail rotor blade failed from fatigue.^[35]
• On 6 July 2009, #146434 crashed about 80 kilometres northeast of Kandahar city killed two Canadian soldiers, along with a Captain from the British Royal Engineers. Three other Canadians were hurt. The crash was reportedly an accident due to the pilot's loss of visual reference in recirculating dust and not due to enemy action,^[20][36][37] but an inquest into the death of Capt Ben Babington-Browne was told that the helicopter was unsuitable for hot and high operations in Afghanistan.^[21] In April 2016, it was revealed that a military police investigation of senior air force officers was underway for negligence for not providing adequate training for aircrew in dealing with take-offs in dusty conditions and also for raising the operational gross weight of the aircraft above that safe for operation.^[38]

Specifications (CH-146)

Copilot's position

Closeup of starboard side C6 GPMG

Data from Department of National Defence^[1][2]

General characteristics

• Crew: Three (pilot, co-pilot, and flight engineer)
• Capacity: 10 troops or 6 stretchers (some sources state maximum 8 passengers)
• Length: 17.1 m (56 ft 1 in)
• Rotor diameter: 14 m (45 ft 11 in)
• Height: 4.6 m (15 ft 1 in)
• Max. takeoff weight: 5,355 kg (11,900 lb)
• Powerplant: 2 × Pratt & Whitney Canada PT6T-3D turboshaft engine, 900 shp (671 kW) each

Performance

• Maximum speed: 260 km/h (139 knots, 160 mph)
• Cruise speed: 220 km/h (118 knots, 136 mph)
• Range: 656 km (354 nm, 405 mi)

Armament

• 7.62 mm C6 general purpose machine gun (GPMG) optionally mounted in one or both doors
• 7.62 mm Dillon Aero M134D "Minigun" optionally mounted in one or both doors^[39][40][41]
• .50 Cal (12.7 mm) GAU-21, as part of Interoperable Griffon Reconnaissance Escort Surveillance System (INGRESS) project.^[42][43]
• Removable armour to protect crew and cabin area occupants from small arms fire and fragmentation.

Avionics

• WESCAM 16TD-A Thermal Imaging System (TIS) stabilized camera system
• Crew equipped with Generation III Image Intensification (II) Night Vision
• CMC Electronics CMA-2082A Flight Management System

See also

Related development

• Bell Huey family
• Bell UH-1N Twin Huey
• Bell 212
• Bell 412

Related lists

• List of aircraft of the Royal Canadian Air Force
• List of Canadian Air Force Equipment

References

External links

Wikimedia Commons has media related to Bell CH-146 Griffon.

• CF CH-146 page
• Bell CH-146 Griffon page rotorhead.org
• An Armed CH-146 Griffon for Kandahar? on CASR's site