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AgustaWestland AW109

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AW109
An AW109E with No. 32 Squadron RAF in 2012
Role VIP/Law enforcement/military/SAR/Utility
Manufacturer Leonardo S.p.A.
previously AgustaWestland
, Augusta
First flight 4 August 1971 (1971-08-04)
Introduction 1976
Status Active service / In production
Primary user Italian Army
Produced 1971–present

The AgustaWestland AW109 is a lightweight, twin-engine, eight-seat multi-purpose helicopter built by the Italian manufacturer Leonardo S.p.A. (formerly AgustaWestland, merged into the Leonardo S.p.A. in 2016).[1] The rotorcraft had the distinction of being the first all-Italian helicopter to be mass-produced.[2]

The first three A109 flying prototypes flew for the first time on 4 August 1971. FAA certification for VFR operation was announced on 1 June 1975, and certification for IFR single-pilot operation was obtained on 20 January 1977.

Developed as the A109 by Agusta, it originally entered service in 1976 and has since been used in various roles, including corporate/VIP, law enforcement, medevac, search-and-rescue, and military roles. The AW109 has been in continuous production for 40 years.

Development

Origins

Agusta A109 K2 of the Rega over Mount Pilatus

In the late 1960s, Agusta designed the A109 originally as a single-engine commercial helicopter.[3] However, it was soon realised that a twin-engine design was needed and it was re-designed in 1969 with two Allison 250-C14 turboshaft engines. A projected military version (the A109B) was considered early on but Agusta initially chose not to pursue immediate development, instead concentrating on the eight-seat A109C version.[4] The first of three prototypes made its maiden flight on 4 August 1971.[5] The A109's flight testing phase was prolonged, this was due in part to the discovery of dynamic instability which took a year to resolve via a modified transmission design;[6] this led to the first production aircraft being completed almost four years later in April 1975. On 1 June 1975, certification for visual flight rules (VFR) upon the A109 was received from the Federal Aviation Administration (FAA).[3]

In 1976, deliveries of production A109 to customers began. Advantages over the then-market leading Bell 206 were the A109's superior speed, twin-engine redundancy, and greater seating capacity.[3] In 1975, Agusta returned to the possibility of a military version, thus a series of trials were carried out between 1976 and 1977 using a total of five A109As outfitted with Hughes Aircraft-built TOW missiles. Two military versions emerged from this program, one was intended for light attack/close support missions and the other for shipboard operations.[7]

Further development

A Belgian AW109 Power performing a display flight, 2013

Improved civil versions quickly followed on from the initial production model; in 1981, a A109A Mk2 with a widened cabin was made available to operators.[8] In 1993, the A109 K2 was introduced using a new powerplant, a pair of Turbomeca Arriel 1K1 engines; this was followed by the A109 Power, broadly similar to the K2 except for the use of Pratt & Whitney Canada PW206 engines instead, in 1996.[3] According to AgustaWestland, the A109 Power was in service in 46 countries by 2008. In 2006, an enlarged variant, the A109S Grand, was introduced.[3]

The Agusta A109 was renamed the AW109 following the July 2000 merger of Finmeccanica S.p.A. and GKN plc's respective helicopter subsidiaries Agusta and Westland Helicopters to form AgustaWestland. Since the mid-1990s, fuselages for the AW109 have been manufactured by PZL-Świdnik, which became a subsidiary company of AgustaWestland in 2010. In June 2006, the 500th fuselage was delivered by PZL-Świdnik, marking 10 years of co-operation on the AW109 between the two companies.[9] In 2004, AgustaWestland formed a joint venture with Changhe Aircraft Industries Corporation for the support and production of the AW109; by 2009, the joint venture was capable to perform final assembly of the AW109, as well as manufacture major sections such as the fuselage.[10]

In February 2014, AgustaWestland revealed that it was developing the AW109 Trekker, an updated variant of the AW109. It is equipped with skid landing gear (the first twin-engine helicopter by AgustaWestland to have this feature) and is powered by a pair of FADEC-equipped Pratt & Whitney Canada PW207C engines; its avionics are supplied by Genesys Aerospace, which have been designed for single-pilot operations.[11] The Trekker reportedly advances upon the standard AW109's utility capabilities.[12] As per prior AW109 versions, the final assembly of the Trekker is undertaken at sites in both the US and Italy.[3][13]

Design

An AW109 parked on the grass

The AW109 is a lightweight twin-engine helicopter, known for its speed, elegant appearance and ease of control.[3][14][15] Several variants have been introduced since the 80s improving the helicopter capabilities thanks to the installation of new avionics and more powerful engines.

All the AW109 variants are fitted with a retractable wheeled tricycle undercarriage, providing greater comfort and taxiing capability.

Head-on view of a low-flying AW109, 2008

Among the latest successful variants are the AW109 Power and the GrandNew.[16]

The AW109 Power features an advanced avionics system, a three-axis autopilot, an auto-coupled Instrument Landing System, integrated GPS, a Moving Map Display, weather radar, and a Traffic Alerting System.These systems are designed to reduce pilot workload (the AW109 can be flown under single or dual-pilot instrument flight rules (IFR)) and enable the use of night vision goggles (NVG) to conduct day-or-night operations.

The cabin can be equipped with the "quick convertible interior", a cabin configuration designed to be flexibly re-configured to allow the rotorcraft to be quickly adapted from passengers transport to MEDEVAC.

The GrandNew was the first light twin engine helicopter in the category certified (in 2009) with glass cockpit, 4-axis digital autopilot and capable of GNSS navigation.

The Company is developing the AW109 Trekker which will be the first AW109 equipped with a skid landing gear.

Operational history

Various branches of the Italian military have operated variants of the AW109; the Guardia di Finanza has operated its own variant of the AW109 since the 1980s for border patrol and customs duties, by 2010, it was in the process of replacing its original AW109s with a new-generation of AW109s.[2]

In 1982, the Argentine Army Aviation deployed three A109As to the Falkland Islands during the Falklands War. They operated with the helicopter fleet (9 UH-1H, 2 CH-47C and 2 Pumas) in reconnaissance and liaison roles. One of the helicopters was destroyed on the ground by a British Harrier attack; the others were captured and sent to Europe in HMS Fearless (L10). The British Army Air Corps decided to use those helicopters in domestic operations (being flown by 8 Flight AAC to support SAS regiment deployments in the UK), alongside two additional A109 which were purchased later following favorable use of the first two; all were retired in 2009.[17][18] The improved AW109E and SP – Grand New versions have also been operated by No. 32 Squadron of the Royal Air Force to transport members of the British Royal Family.[19]

In 1988, 46 A109s were sold to the Belgian Armed Forces; it was later alleged that Agusta had given the Belgian Socialist Party over 50 million Belgian francs as a bribe to secure the sale. The resulting scandal led to the resignation and later conviction of NATO Secretary General Willy Claes.[20] Belgium has operated an A109 aerial display team.[21] In early 2013, a pair of Belgian AW109s were deployed to Sévaré, Mali, to perform medical evacuation mission in support of the French-led Operation Serval.[22] In June 2013, Belgian newspaper La Libre Belgique alleged that several former Belgian military helicopters had been sold via a private company to South Sudan in violation of a European Union embargo on weapons sales.[23][24]

Pair of South African Air Force (SAAF) AW109s landing in formation

In the 1990s, the US Coast Guard, seeking to tackle drug trafficking on small speed boats via armed aerial interdiction helicopters, evaluated several options and selected the AW109 as the winner. For a number of years, eight armed AW109s, designated MH-68A Sting Ray, were leased from AgustaWestland and deployed at Coast Guard land facilities and onboard cutters. Positive experience with the AW109 led to the Coast Guard deciding to arm all of its helicopters and, following adaptions of their existing assets, the AW109s were returned after the lease expired.[3]

In September 1999, the South African Air Force (SAAF) placed an order for 30 AW109s;[3] 25 of the 30 rotorcraft was assembled locally by Denel Aviation, starting in 2003.[25][26] As many as 16 SAAF AW109s were deployed for patrol, utility, and medical evacuation missions during the 2010 FIFA World Cup.[27] In July 2013, the SAAF reported that 18 AW109s had effectively been grounded due to lack of funding, these rotorcraft being only occasionally activated but not conducting flights; in 2013, only 71 flight hours were allocated to the whole AW109 fleet. The type may be reduced to flying VIPs rather than being operationally capable; South Africa is also considering selling a number of AW109s, and may cease helicopter operations altogether.[28]

In 2001, 20 AW109s were ordered for the Swedish Armed Forces,[3] receiving the Swedish military designation of Hkp 15. In 2010, it was reported that considerable demands were being placed upon the AW109 fleet, in part due to the delayed delivery of the NHIndustries NH90.[29] In early 2015, a pair of Swedish AW109s were deployed on board the Royal Netherlands Navy ship HNLMS Johan de Witt, their first-ever deployment on board a foreign vessel, in support of a multinational anti-piracy mission off the coast of Somalia; the AW109 reportedly achieve a 100% availability rate over the course of three months.[30]

An Australian AW109 during a rescue demonstration, 2008

Between 2007 and 2012, three AW109E Power helicopters were operated under lease by the Royal Australian Navy (RAN) to train naval aircrew.[31]

In May 2008, the Royal New Zealand Air Force (RNZAF) placed an order for five AW109LUH rotorcraft to replace their aging Bell 47 Sioux in a training capacity; they are also used in the utility role to compliment the larger NHIndustries NH90 and has seen limited use in VIP missions.[32]

In August 2008, Scott Kasprowicz and Steve Sheik broke the round-the-world speed record using a factory-standard AgustaWestland AW109S Grand, with a time of 11 days, 7 hours and 2 minutes. The AW109S Grand is also recorded as being the fastest helicopter from New York to Los Angeles.[33][34]

In 2013, the Philippine Air Force (PAF) and the Philippine Navy independently ordered batches of AW109 Power rotorcraft; additional AW109s were ordered in 2014.[35] The PAF AW109s are used as armed gunships, while both armed and unarmed AW109s are operated by the Philippine Navy.[36][37] During the Battle of Marawi AW109s were widely used against ISIS affiliated Maute Group.[38]

Variants

Agusta A109 of the Italian police
Former Dyfed-Powys Police Air Support Unit Helicopter (X-Ray 99) demonstration at police HQ Open Day 2008
A109
Maximum Gross Weight: 2450 kg (5400 lb); powered by two Allison Model 250-C20 engines.
A109A
Upgraded version of the A109. Maximum Gross Weight: 2450 kg (5400 lb) or 2600 kg (5732 lb); powered by two Allison Model 250-C20B engines.
A109All
Upgraded civil version of the A109A. Maximum Gross Weight: 2600 kg (5732 lb); powered by two Rolls–Royce 250-C20R/1 engines.
A109 EOA
Italian Army scout version powered by two Rolls-Royce (Allison) 250-C20R/1 engines.
A109C
Upgraded civil version of the A109AII. Maximum Gross Weight: 2720 kg (5997 lb); powered by two Rolls-Royce 250-C20R/1 engines.[15]
A109CM
Military version of the civil A109C. The first customer was the Belgian Army.
A109C MAX
Emergency Medical Services version based on A109C with two doors hinged top and bottom, so the upper halves lift up and the lower halves lower. Up to two stretchers can be transversally accommodated in the cabin.[39]
A109K
Military version equipped with non-retractable tricycle landing gear.
A109K2
Upgraded civil version of the A109C. Maximum Gross Weight: 2850 kg (6283 lb); powered by two Arriel 1K1 engines.
A109KM
Military version of A109K2.
A109KN
Naval version with equivalent roles to A109KM.
A109E
Upgraded civil version of the A109K2. Maximum Gross Weight: 2850 kg (6283 lb) or 3000 kg (6614 lb); powered by two Pratt & Whitney Canada PW206C or Turbomeca Arrius 2K1 engines; equipped with new cockpit with Integrated Display System (IDS). The marketing designation is “AW109 Power”.
MH-68A Stingray
US Coast Guard version of A109E (P & W version).
A109LUH
Military (Light Utility Helicopter) variant based on the A109E Power. Maximum Gross Weight: 3000 kg (6614 lb) or 3175 kg (7000 lb); powered by two Turbomeca Arrius 2K2 engines; equipped with glass cockpit and 4-axis autopilot.
MH-68A
Eight A109E Power aircraft were used by the United States Coast Guard Helicopter Interdiction Tactical Squadron Jacksonville (HITRON Jacksonville) as short-range armed interdiction helicopters from 2000 until 2008, when they were replaced with MH-65C Dolphins.[40] Agusta designated these armed interdiction aircraft as "Mako" until the U.S. Coast Guard officially named it the MH-68A Stingray in 2003.[41]
A109S
Upgraded civil version of the A109E. Maximum Gross Weight: 3175 kg (7000 lb); powered by two Pratt & Whitney Canada PW207C engines; the passenger cabin has been lengthened; airframe, crew/passengers seats and fuel tanks are crash resistant. The marketing designation is “Grand”.
A109SP
Upgraded civil version of the A109S. Equipped with hybrid metal-composite fuselage structure, glass cockpit and 4-axis digital autopilot. The marketing designation is “GrandNew”.
A109N
Variant of  A109E. Equipped with two Pratt & Whitney Canada PW207C engines, pilots crash resistant seats, glass cockpit and digital 4-axis autopilot.
AW109 Trekker
A variant of the AW109S Grand with skid landing gear and glass cockpit.:

Operators

AW109E Power from the Bangladesh Navy

The AW109 is flown by a range of operators including private companies, military services, emergency services and air charter companies.

Military and government operators

 Algeria
 Albania
 Bangladesh
 Belgium
Belgian Air Component A109BA anti-tank variant.
 Bulgaria
 Chile


 Ecuador

 Greece


 Italy
An AW109 Power helicopter of the Philippine Navy
 Japan
 Latvia
 Malaysia
 Mexico
 New Zealand
 Nigeria
A Swedish Armed Forces A109 designated the Hkp-15A
 Peru
 Philippines
 Slovenia
 South Africa
 Sweden
 Turkmenistan
AW109E of the Empire Test Pilots' School
 Uganda
 United Kingdom

Former military operators

 Argentina
 Australia
 Italy
A U.S. Coast Guard MH-68A Stingray
 Paraguay
 Slovenia
 United Kingdom
 United States
 Venezuela

Accidents

Displayed

Specifications (AW109 Power with PW206C) 2850 Kilo version

Flight deck of an AW109, 2012

Data from Leonardo "AW109 Power".

General characteristics

  • Crew: 1 or 2
  • Capacity: 6 or 7 passengers
  • Length: 11.448 m (37 ft 7 in) fuselage
  • Height: 3.50 m (11 ft 6 in)
  • Empty weight: 1,590 kg (3,505 lb)
  • Max takeoff weight: 2,850 kg (6,283 lb)
  • Powerplant: 2 × Pratt & Whitney Canada PW206C Turboshaft engine, 418 kW (560 hp) each
  • Main rotor diameter: 11.00 m (36 ft 1 in)

Performance

  • Maximum speed: 311 km/h (193 mph, 168 kn)
  • Cruise speed: 285 km/h (177 mph, 154 kn)
  • Never exceed speed: 311 km/h (193 mph, 168 kn)
  • Ferry range: 932 km (579 mi, 503 nmi)
  • Rate of climb: 9.8 m/s (1,930 ft/min)

Notable appearances in media

Main article: Aircraft in fiction § AgustaWestland AW109

See also

Related development

Aircraft of comparable role, configuration, and era

Related lists

References

Citations

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