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Aérospatiale Alouette III

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SA 316/SA 319 Alouette III
A Netherlands Air Force SA 316B Alouette III during '100th Anniversary of Dutch Military Aviation' airshow
General information
TypeLight utility helicopter
National originFrance
ManufacturerSud Aviation
Aérospatiale
StatusIn service
Primary usersFrench Armed Forces
Number built2,000+
History
Manufactured1961–1985
(HAL Chetak production stopped 2021)
Introduction date1960
First flight28 February 1959
Developed fromAérospatiale Alouette II
VariantsIAR 316
Developed intoAérospatiale Gazelle
Atlas XH-1 Alpha

The Aérospatiale Alouette III (French pronunciation: [a-lwɛt], Lark; company designations SA 316 and SA 319) is a single-engine, light utility helicopter developed by French aircraft company Sud Aviation. During its production life, it proved to be a relatively popular rotorcraft; including multiple licensed manufacturers, more than 2,000 units were built.

The Alouette III was developed as an enlarged derivative of the earlier and highly successful Alouette II. Sharing many elements with its predecessor while offering an extra pair of seats and other refinements, it quickly became a commercial success amongst both civil and military customers. Further variants were also developed; amongst these was a high-altitude derivative, designated as the SA 315B Lama, which entered operational service during July 1971. The Alouette III was principally manufactured by Aérospatiale; the type was also built under licence by Hindustan Aeronautics Limited (HAL) in India as the HAL Chetak, by Industria Aeronautică Română (IAR) in Romania as the IAR 316 and F+W Emmen in Switzerland.

Similar to the Alouette II, in military service, it was used to perform missions such as aerial observation, photography, air-sea rescue, liaison, transport and training; it could also be armed with anti-tank missiles, anti-shipping torpedoes, and a fixed cannon. In a civilian capacity, the Alouette III was commonly used for casualty evacuation (often fitted with a pair of external stretcher panniers), crop-spraying, personnel transportation, and for carrying external loads. By the 2010s, many operators were in the process of drawing down their fleets and replacing them with more modern types; the French military intend to replace their Alouette IIIs with the newly developed Airbus Helicopters H160.[1]

Development

[edit]

Origins

[edit]

The Alouette III has its origins with an earlier helicopter design by French aircraft manufacturer Sud-Est, the SE 3120 Alouette, which, while breaking several helicopter speed and distance records in July 1953, was deemed to have been too complex to be realistic commercial product.[2][3] Having received financial backing from the French government, which had taken an official interest in the venture, the earlier design was used as a starting point for a new rotorcraft that would harness the newly developed turboshaft engine; only a few years prior, Joseph Szydlowski, the founder of Turbomeca, had successfully managed to develop the Artouste, a 260 hp (190 kW) single shaft turbine engine derived from his Orédon turbine engine. An improved version of this engine was combined with the revised design to quickly produce a new helicopter, initially known as the SE 3130 Alouette II.[2][4][5]

During April 1956, the first production Alouette II was completed, becoming the first production turbine-powered helicopter in the world.[2] The innovative light helicopter soon broke several world records and became a commercial success.[6][7] As a result of the huge demand for the Alouette II, manufacturer Sud Aviation took a great interest in the development of derivatives, as well as the more general ambition of embarking on further advancement in the field of rotorcraft.[8]

In accordance with these goals, the company decided to commit itself to a new development programme with the aim of developing a more powerful helicopter that would be capable of accommodating up to 7 seats or a pair of stretchers. The design team was managed by French aerospace engineer René Mouille.[8][9][10] The design produced, designated as the SE 3160, featured several improvements over the Alouette II; efforts were made to provide for a higher level of external visibility for the pilot as well as for greater aerodynamic efficiency via the adoption of a highly streamlined exterior.[8]

Into flight and production

[edit]
Cockpit and flying controls of an Alouette III

On 28 February 1959, the first prototype SE 3160 performed its maiden flight, piloted by French aviator Jean Boulet.[8][9] Shortly thereafter, the SE 3160 would become more commonly known as the Alouette III. During its flight test programme, the prototype demonstrated its high altitude capabilities on several occasions; in June 1959, it landed at an altitude of over 4,000 metres in the Mont Blanc mountain range and, during October 1960, it was able to achieve the same feat at an altitude more than 6,000 metres in the Himalayas. During these attempts, it was flown by Jean Boulet, who was accompanied by a pair of passengers and 250 kg of equipment.[8]

During 1961, the initial SE 3160 model of the type entered serial production.[8] On 15 December 1961, the Alouette III received its airworthiness certificate, clearing it to enter operational service. Despite an order placed by the French Army for an initial batch of 50 Alouette IIIs during June 1961, the first two customers of the rotorcraft were in fact export sales, having been sold outside of France.[8] The Alouette III was specifically designed to fly at high altitudes, as such, it quickly earned a reputation for its favourable characteristics during rescue operations. According to its manufacturer, it was the first helicopter to present an effective multi-mission capability and performance to match with its diverse mission range in both civil or military circles.[8]

The SE 3160 model continued to be produced until 1968, when it was replaced by the refined SA 316B model.[8] (After its production ended, the SE 3160 has sometimes been retroactively redesignated "SA 316A", but its original SE 3160 designation is more commonly used, especially in older sources.) Both the SE 3160 and the SA 316B were powered by a more powerful version of the Artouste engine, the Artouste IIIB, whose turbine was rated to produce 858 horsepower (640 kW), though because of the limits of the engine's reduction gearbox, the Artouste IIIB was de-rated to generate 563 horsepower (420 kW) in service. The later SA 319B model adopted the more fuel-efficient Turbomeca Astazou XIVB engine, extending its range and endurance; on 10 July 1967, the Astazou-powered Alouette III performed its first flight.[8] During 1979, the 1,437th Alouette III departed from the company's assembly line in Marignane, France, after which the main production line was closed down as a consequence of diminishing demand for the type. During 1985, the final French-produced Alouette III was delivered.[8] It had been produced from 1961 to 1985 in France, however, license production continued.[11]

Overseas production

[edit]
The HAL Chetak (Alouette III) remained in production to 2021, and in 2022 marked six decades of service in India

Despite the closure of Aérospatiale 's own production line, the event was not the end of the type's manufacturing activity. Over 500 Alouette IIIs are recorded as having been manufactured under licence abroad in several countries, such as Romania, India, and Switzerland.[8][12] Various versions of the Alouette III were also either licence-built or otherwise assembled by IAR in Romania (as the IAR 316), F+W Emmen (de) in Switzerland, by Fokker and Lichtwerk in the Netherlands, and in India as the HAL Chetak.[8][13] The Romanian IAR 316, was an Aérospatiale SA 316B Alouette III license produced from 1971 to 1987, with 250 made with about half for Romania and half for export.[14] Additionally, Romania also developed the IAR 317 Airfox, an attack helicopter version of the IAR 316;at least one prototype was made and was debuted at the 1985 Paris Air Show.[15]

Hindustan Aeronautics Limited (HAL) obtained a licence to construct the Alouette III, which was known locally as the HAL Chetak, at their own production facilities in India.[8] More than 300 units were built by HAL; the company has continued to independently update and indigenise the helicopter over the decades. A modernised variant of the Chetak has remained production, though at a diminished volume, into the 21st century. The latest HAL Chetak was delivered in 2021, and also included updated avionics.[12] Over 350 Chetak had been produced the 2020s.[16]

Retirement

[edit]

By the 2010s, the majority of Alouette III operators were in the process of winding down or entirely retiring their fleets.[1] During 2017, the French Navy observed that it was costing the service around 13,000 Euros per flight hour to operate a single Alouette III, which it claims was more than double the equivalent costs of a modern-day rotorcraft in its class; it attributed this high running cost as being a natural side effect of their fleet's advanced age and an overall shortage of spare parts for the type, which has in turn been caused by the mass production of the Alouette III having been terminated three decades earlier. Furthermore, retirement has also been motivated by a lack of modern features that would be present upon contemporary helicopters, which is a natural consequence of the Alouette III having been originally developed during the 1950s.[1]

Operational history

[edit]
Danish Navy Alouette III on HDMS Beskytteren in 1977

Argentina

[edit]

The Argentine Naval Aviation operated a total of 14 Alouette III helicopters. A single SA316B was on board the ARA General Belgrano when she was sunk by torpedoes fired by HMS Conqueror during the 1982 Falklands War between Argentina and the United Kingdom. A second Alouette III played an important role during the Argentine Invasion of South Georgia. On 2 December 2010, the last example was retired at a ceremony held at BAN Comandante Espora, Bahía Blanca.[17][18]

Australia

[edit]

Between April 1964 and 1967, a small batch of Alouette IIIs were delivered from France in a disassembled state to Australia. Following their assembly, these were used by the Royal Australian Air Force (RAAF) at the Woomera Rocket Range for light passenger transport purpose and to assist in the recovery of missile parts in the aftermath of test launches conducted at the Range.[19]

Austria

[edit]

Between 1967 and 1969 Austria acquired 12 SE3160 Alouette IIIs which were upgraded to version SE316B. They are used for liaison and transport purposes and still play a vital role in rescue missions in the high mountains of Austria with their side-mounted hook.
They are stationed in Aigen im Ennstal, Klagenfurt and Schwaz in Tirol.[20] Austria plans to decommission them beginning in 2023, they are being replaced by Leonardo AW169M.[21]

In addition to the original order, three more used Alouette III were acquired from other forces to replace attrition.[22]

Bangladesh

[edit]
The historical Bangladesh Air Force Alouette III which was used in the Bangladesh Liberation War. It was the first helicopter of Bangladesh Air Force, and it performed successful airstrikes during the war. One of the rocket pods is seen in the outfitted pylons attached to its side.

Indian civilian authorities and the IAF donated 1 DC-3 Dakota (gifted by the Maharaja of Jodhpor), 1 Twin Otter plane, and 1 Alouette III helicopter for the newborn Bangladesh Air Force,[23] which was to take advantage of the lack of night-fighting capability of the PAF to launch hit-and-run attacks on sensitive targets inside Bangladesh from the air.[24] The Alouette III helicopter was rigged to fire 14 rockets from pylons attached to its side and had .303 Browning machine guns installed, in addition to having 1-inch (25 mm) steel plate welded to its floor for extra protection. Squadron Leader Sultan Mahmood, Flight Lieutenant Bodiul Alam, and Captain Shahabuddin, all of whom later won the Bir Uttam gallantry award, operated the helicopter.

Chile

[edit]

During 1977, the Chilean Navy ordered a batch of ten SA-319Bs. These rotorcraft, which were delivered by the middle of 1978, were only made operational just before the peak of the Beagle conflict between Chile and neighbouring Argentina. The Alouette III was the first real organic maritime ship borne tactical helicopter to be operated by Chile's naval forces; for this role, they were equipped with a radar and armed with rockets, guns, depth charges and a single light anti-submarine torpedo.[citation needed]

During the frantic training period in 1978 to meet wartime needs, a sole SA-319B was accidentally damaged, leading to it being placed in storage and subsequently repaired back to an airworthy condition years later. All ten Chilean Navy SA-319Bs were operational and in excellent conditions by the end of the 1980s, shortly after which they were replaced by larger SA532 Super Puma helicopters, and were bought by civilian operators.[citation needed]

Denmark

[edit]

Between 1962 and 1967, a total of 8 Alouette IIIs were delivered to the Royal Danish Navy. They were primarily tasked with SAR and reconnaissance in support of the navy's Arctic patrol ships. During 1982, they were replaced by a batch of British Westland Lynx.[25]

France

[edit]
French Navy SA 319B Alouette III (with Astazou engine) on the frigate La Motte-Picquet

During early 1960, the Alouette III officially entered squadron service with the French armed forces. In June 1971, having been suitably impressed by the type's performance so far, the French Army elected to order a force of 50 Alouette IIIs for their own purposes.[citation needed] Amongst the most noteworthy uses that France applied the type to was the first use of helicopter-based anti-tank missiles in the form of the SS.11 MCLOS wire-guided missile.[26]

During June 1960, an Alouette III carrying seven people successfully performed both take-offs and landings on Mont Blanc in the French Alps at an altitude of 4,810 metres (15,780 feet), an unprecedented altitude for such activities by a helicopter at the time.[27] The same helicopter again demonstrated the type's extraordinary performance in November 1960 by making take-offs and landings with a crew of two and a payload of 250 kg (551 lbs) in the Himalayas at an altitude of 6,004 metres (19,698 feet).[27]

During June 2004, the Alouette III was retired from the French Air Force after 32 years of successful service, having been entirely replaced by the newer twin-engined Eurocopter EC 355 Ecureuil 2. The French Army also withdrew the last of their examples during 2013 in favour of more modern rotorcraft.[1]

By 2017, the French Navy were still using the Alouette III in a reduced capacity, nonetheless being used to routinely conduct both Search and Rescue and logistics missions.[28] Since the 1970s, the type has gradually been supplanted by the larger Eurocopter AS365 Dauphin, and later on, by the specialised Eurocopter AS565 Panther as an anti-submarine warfare platform. The use of twin-engined rotorcraft in the maritime environment has become somewhat of an expected standard, one which the single-engined Alouette III cannot satisfy, putting the type at an obvious disadvantage.[1] During January 2018, it was announced that the French Navy would be replacing its remaining Alouette IIIs with rented Aérospatiale SA 330 Pumas as a stop-gap measure; this decision was reportedly taken due to its increasing unreliability, rapidly inflating operating costs, and the sheer age of the fleet.[1][29] However, as of 2021 the Alouette III was still reported to be in service.[30] The aircraft was finally withdrawn from French Navy service in June 2022.[31] It had been in service for 60 years and was in active use right to the end, with the last three ending their service at the end of December.[32] The aircraft was long known for ease of maintenance, which aided its use overseas, however and the end of its life it was requiring increasing maintenance hours and it was becoming hard to get spare parts which were no longer in production. The aircraft was still be used for training, interdiction missions, and shorter range mission.[32]

Ireland

[edit]
An Irish Air Corps SA 316B Alouette III, 2011

During 1963, the first pair of Alouette IIIs were delivered to the Irish Air Corps; a third rotorcraft arrived in 1964 and a batch of five further aircraft were delivered between 1972 and 1974. The service ultimately operated a total of eight Alouette IIIs between 1963 and 2007; throughout much of this period, they were the only helicopters operated by the Corps. [citation needed]

On 21 September 2007, the Alouette III was formally retired from the Irish Air Corps during a ceremony held at Baldonnel Aerodrome. During 44 years of successful service, the Irish Alouette III fleet amassed over 77,000 flying hours. As well as routine military missions, the aircraft undertook some 1,717 search-and-rescue missions, saving 542 lives and flew a further 2,882 air ambulance flights. The oldest of the Alouettes, 195, is kept in 'rotors running' condition for the Air Corps Museum.[33]

India

[edit]
Indian Navy Chetak during IFR 2016

Under a licensing arrangement between Aérospatiale and Indian aircraft manufacturer Hindustan Aeronautics Limited (HAL), the Alouette III has been built under licence by HAL in India. Known locally under the designation HAL Chetak, more than 300 rotorcraft have been manufactured to date; the majority of these were acquired for military purposes with the Indian Armed Forces, who have used them to perform various mission roles, including training, transport, CASEVAC (casualty evacuation), communications and liaison roles.[34] By 2017, the Chetak was reportedly serving as the most widely used IAF helicopter for training, light utility and light attack roles.[35]

During 1986, the Indian Government constituted the Army's Aviation Corps; consequently, the majority of Chetaks previously operated by AOP Squadrons were transferred from the Indian Air Force to the Indian Army on 1 November 1986. The Air Force has continued to fly a force of armed Chetaks in the anti-tank role as well as for CASEVAC missions and general duties. During the 2010s, the Chetak is being gradually replaced by the newer HAL Dhruv in the armed forces.[34] An option to re-engine the HAL Chetak with the Turbomeca TM 333-2B engine, which would better facilitate high-altitude operations in the Himalayas was considered, but ultimately not pursued.[citation needed]

In addition to producing the type for Indian customers, HAL has also achieved some export sales of Chetak helicopters to several nations, including Namibia and Suriname.[36] India has also opted to donate several secondhand Chetak helicopters to other countries, such as neighbouring Nepal.[37] As of 2017, the Indian Navy has reportedly recognised the necessity of procuring a replacement for the type.[38]

HAL Chetak was used in Operation Khukri which was a multinational operation launched in the United Nations Assistance Mission in Sierra Leone (UNAMSIL), involving India, Ghana, Britain and Nigeria .[39]

Beginning in the 1970s, during Republic Day parades, Chetak helicopters have been decorated to look like animals such as dodo birds, fish, and, most notably, elephants. The helicopters decorated like elephants have become iconic in India, and known as names such as "dancing elephant helicopters" and "flying elephants".[40][41]

Newly built HAL Chetak were delivered as recently as 2019, after a 2017 contract for 8 additional Chetak.[42] The last (or latest for new) new Chetak was delivered in 2021, and in 2022 marked 60 years of service in India.[12] By the 2020s over 350 Hal Chetak had been produced.[16]

Pakistan

[edit]

During the 1960s, Pakistan purchased a fleet of 35 Alouette III helicopters to equip the Pakistan Air Force (PAF). These saw active combat during the Indo-Pakistani War of 1971, in which the type was mainly used for liaison and VIP-transport missions. In 2010, it was announced that Switzerland had come to an agreement with Pakistan for a number of ex-Swiss Alouette IIIs to be donated to the PAF; however, the terms of this agreement restricts their usage to performing search and rescue and disaster relief operations. Pakistan Navy started operating Alouette III helicopters in 1977. The helicopters are still in service and have a long history of flying laurels.[43]

Portugal

[edit]
Portuguese paratroopers jump from an Alouette III in an air assault operation in Angola in the early 1960s.

Portugal was the first country to use the Alouette III in combat. In 1963, during the Overseas Wars in Angola, Mozambique and Portuguese Guinea, Portugal began using Alouette IIIs in combat, mainly in air assault and medevac operations, where it proved its qualities. Besides the basic transport version (code named canibal, plural canibais), Portugal used a special version of the Alouette III with a MG 151 20 mm autocannon mounted in the rear in order to fire from the left side door; it was designated helicanhão (heli-cannon) and code named lobo mau (big bad wolf).

In the Overseas Wars, the Portuguese usually launched air assaults with groups of six or seven Alouette III: five or six canibais – each usually carrying five paratroopers or commandos – and a lobo mau heli-cannon. The Portuguese practice was for the troops to jump from the canibais when the helicopters were hovering two-three metres above the ground – famous images of these disembarking troops became an iconic image of the war. The landing of the troops was covered by the lobo mau. While the troops performed the ground assault, the canibais moved away from the combat zone, while the lobo mau stayed to provide fire support, destroying enemy resistance and concentration points with the fire from its 20 mm autocannon. Once the ground combat had finished, the canibais returned; firstly to collect the wounded, then the rest of the troops.

In April 2020, the last of Portugal's SE3160 Alouette IIIs were withdrawn from service, the type having been replaced by five AgustaWestland AW119 Koala.[44][45]

Republic of Korea

[edit]
South Korean Aérospatiale SA 319B Alouette III

In 1977, the Republic of Korea Navy started operating 12 Alouette IIIs.[46] It was typically dispatched aboard several destroyers in an anti-submarine capacity. On 13 August 1983, the Republic of Korea Navy discovered a naval vessel of the Korean People's Army that had entering their sea. A single Alouette III engaged the spy ship and destroyed it using an AS.12 missile;[46] following the mission, the specific helicopter involved received a victory marking, which was the only aircraft to receive such a mark in the entire Republic of Korea Armed Forces. The Alouette III was also operated as a rescue helicopter, responding to major incidents such as the crash of Asiana Airlines Flight 733 in Mokpo, Republic of Korea, on 26 July 1993.

Following the introduction of the Westland Lynx during the early 1990s, the Alouette IIIs were diverted to secondary roles, such as training, and were gradually phased out of service. A substantial number were withdrawn in 2006. South Korea's remaining Alouette IIIs were withdrawn from service in December 2019.[46]

Rhodesia

[edit]

The nation of Rhodesia emerged as a prolific user of both the Alouette II and its enlarged sibling, the Alouette III.[47] Early operations were flown with an emphasis on its use by the Rhodesian Army and British South Africa Police, including paramilitary and aerial reconnaissance operations. Throughout the 1960s, the type progressively spread into additional roles, including aerial supply, casualty evacuation, communications relays, and troop-transports.[48] Rhodesian aerial operations would typically involve flying under relatively high and hot conditions, which reduced the efficiency of aircraft in general; however, the Alouette II proved to be both hardy and relatively resistant to battle damage.[49] In order to extend the inadequate range of the type, fuel caches were strategically deployed across the country to be used for refuelling purposes.[48]

A Rhodesian SE 3160 Alouette III hovering with an underslung cargo, August 1962

At its peak, No. 7 Squadron of the Rhodesian Air Force operated a force of 34 Alouette IIIs, which would normally operate in conjunction with a smaller number of Alouette IIs. They played a major part in the Rhodesian Forces' Fireforce doctrine, in which they would rapidly deploy ground troops, function as aerial observation and command posts, and provide mobile fire support as armed gunships.[50] In order to improve performance, Rhodesia's Alouette fleet was subject to extensive modifications during its service life, including changes to their refueling apparatus, gun sights, and cabin fittings, along with the installation of additional armouring and armaments.[51]

Over time, the Rhodesian Security Forces developed an innovative deployment tactic of rapidly encircling and enveloping enemies, known as the Fireforce, for which the Alouette II was a core component.[47] The quick-reaction Fireforce battalions were typically centred at Centenary and Mount Darwin; however, a deliberate emphasis was placed on locating both rotorcraft and troops as close to a current or anticipated theatre of operations as would be feasibly possible.[52]

South Africa

[edit]
A flight of four Alouette IIIs performing an aerobatic display

The Alouette III served for over 44 years in the South African Air Force (SAAF); it is believed that 121 examples were acquired between 1962 and 1975 for the service from France.[53] During 1966, by which point the SAAF had built up a fleet of around 50 Alouette IIIs already, it was decided to dispatch several of the type to support ground troops stationed in South West Africa attempting to contain the emerging South West African People's Organisation (SWAPO); this would be the beginnings of what would become the lengthy South African Border War.[53] The type saw considerable action during the conflict; while initially used for more passive operations such as aerial reconnaissance, from July 1967 onwards, Alouette III participated in active combat missions as well. It was frequently employed as a support platform for performing South African counterstrike operations inside neighbouring Namibia and Angola.[54] Reportedly, a total of eight Alouette IIIs had been listed as having been lost over the conflict zone by the end of the war.[53]

By 1990, there were a total of 70 Alouette III helicopters remaining in active service.[53] Throughout the course of its service life with the SAAF, the Alouette III fleet was recorded as having accumulated more than 346,000 flight hours. During June 2006, the last Alouette III was officially withdrawn from SAAF service at a ceremony held at AFB Swartkop, near Pretoria.[54]

During January 2013, reports emerged that South African defense officials were in the process of planning to transfer some of the retired fleet, along with spare parts and associated support equipment, to the Zimbabwean Air Force; South African newspaper Mail & Guardian claimed that the rotorcraft could be used to sway politics in the nation in favour of the incumbent President, Robert Mugabe.[55] However, during February 2013, an interim court order was issued which blocked the proposed sale of South African Alouette IIIs to Zimbabwe.[56] In February 2014, reports emerged that South Africa now intended to sell part of the ex-SAAF fleet to Namibia instead.[57]

Suriname

[edit]

During 1986, the South American country of Suriname purchased a pair of secondhand Alouette III helicopters from Portugal. During 1999, the Surinam Air Force opted to retire and sell off its Alouette III helicopters. In their place, three newly built HAL Chetaks (an Indian version of the Alouette IIIs) were delivered to the Suriname Air Force on 13 March 2015, while the pilots and technicians of the Surinam Air Force underwent training on the type in Bangalore, India for some time.[58][59][60]

Switzerland

[edit]
Formation flight of 10 Alouette IIIs, 2010

During 1964, the Swiss Air Force opted to procure a batch of nine Alouette III rotorcraft directly from Aérospatiale; further orders included one placed in 1966 for 15 more. In addition, a total of 60 SA-316Bs (often referred to as the F+W Alouette IIIS) were licence-assembled by F+W Emmen in Switzerland.[citation needed]

During 2004, the Swiss Armed Forces announced the expected withdrawal of the Alouette III from front-line service would commence by 2006 and that it was to be entirely retired by 2010; they have been replaced by a smaller force of 20 new-built Eurocopter EC635s.[61] Since their retirement, at least 10 ex-Swiss Alouettes have been gifted to Pakistan to perform search and rescue operations.[43]

Variants

[edit]
  • SE 3160 : the first production version. Sometimes retroactively redesignated SA 3160 or SA 316A.[62] Maximum weight of 2,100 kg (4,630 lb); powered by Turbomeca Artouste IIIB or IIIB1 turboshaft engine rated at 420 kW (563 hp) for takeoff (440 kW (590 hp) for IIIB1) and 405 kW (543 hp) continuous, but restricted by rotor transmission limitations to 405 kW (543 hp) for takeoff and 331 kW (444 hp) continuous.[63][64][65]
  • SA 316B : like SE 3160, but with strengthened main and tail rotor for greater performance; maximum weight of 2,200 kg (4,850 lb), and rotor transmission limit on takeoff power increased to 440 kW (590 hp).[63][64][65] The SA 316B was built under licence in India as the HAL Chetak, and again under licence in Romania as the IAR 316.[66]
    • HAL Chetak : Indian production version of the SA 316B.[66]
    • HAL Chetan : HAL/Turbomecca TM 333-2M2 Shakti engine.
    • IAR 316 : Romanian production version of the SA 316B.[67]
    • F+W Alouette IIIS : 60 SA-316B licence-assembled in Switzerland by F+W Emmen (de) between 1970 and 1974.
  • SA 319B (sometimes called "Alouette III Astazou") : developed from the SA 316B. Maximum weight of 2,250 kg (4,960 lb); powered by a Turbomeca Astazou XIVB turboshaft engine rated at 440 kW (590 hp) for takeoff and 405 kW (543 hp) continuous, but rotor transmission limitations restricted continuous power to 368 kW (493 hp).[63][64][65][66]
  • SA 316C : developed from the SA 316B. Maximum weight of 2,250 kg (4,960 lb); powered by a Turbomeca Artouste IIID turboshaft engine rated at 440 kW (590 hp) for takeoff and 405 kW (543 hp) continuous, but rotor transmission limitations restricted continuous power to 368 kW (493 hp).[63][64][65] The SA 316C was only built in small numbers.[66]
  • G-Car and K-Car : Helicopter gunship versions for the Rhodesian Air Force.[68] The G-Car was armed with two side-mounted Browning .303 or a single 7.62mm MAG machine guns. The K-Car was armed with a 20 mm MG 151 cannon, fitted inside the cabin, firing from the port side of the helicopter.
  • SA.3164 Alouette-Canon: Modified in 1964 as a gunship version armed with a 20mm gun in the nose and external hardpoints for missiles mounted on each side of the fuselage. Only one prototype was built.[69]
  • IAR 317 Airfox: A Romanian helicopter gunship project based on the IAR 316. Only three prototypes were ever built.[67]
  • Atlas XH-1 Alpha: South African two-seat attack helicopter project. It was used in the development of the Denel Rooivalk.[66][70]
  • K-1 'Chetak', informally- 'Frenchman': 8 HAL Chetaks were bought by the Soviet Union for testing purposes at Kacha airfield, Sevastopol,[71] in 1985, and later 2 of them were used by DOSAAF from Karagoz airfield[citation needed]

Operators

[edit]

Current military operators

[edit]
Austrian SE 3160 Alouette III over the Alps
 Angola
 Bolivia
 Burundi
 Chad
 COD
 Eswatini
 Ethiopia
 Gabon
HAL Chetak from Indian Navy's INS Rana.
 India
 Malta
 Mauritius
 Namibia
 Pakistan
An SA 316B Alouette III used by the Air Wing of the Armed Forces of Malta during a flying display.
 Suriname
 Tunisia
 Zimbabwe

Former military operators

[edit]
 Abu Dhabi
 Argentina
 Austria
 Belgium
 Biafra
 Bangladesh
 Bophuthatswana
 Burma
Circa 1980, a Royal Danish Navy's SE 3160 Alouette III on a Hvidbjørnen-class inspection vessel.
 Cameroon
 Chile
 Denmark
 Dominican Republic
 Ecuador
 El Salvador
 France
 Ghana
 Greece
 Guinea
 Guinea-Bissau
 Guyana
 Hong Kong
Irish Air Corps SA 316B Alouette III, 212 from 3 Operations Wing at RNAS Yeovilton in July 2006
 Iraq
 Ireland
 Jordan
 Lebanon
 Libya
 Malaysia
 Madagascar
 Malawi
 Mexico
An SA 316B Alouette III of the Royal Netherlands Air Force
 Morocco
 Mozambique
 North Yemen
 Netherlands
 Nicaragua
 Pakistan
 Peru
 Portugal
 Rhodesia
 Rwanda
 Saudi Arabia
Portuguese Rotores de Portugal aerobatic team's Alouette III helicopter
 Seychelles
 Singapore
 South Africa
 South Korea
 South Vietnam
 Spain
 SUI
 Upper Volta
Aérospatiale SE 3160 Alouette III of the Swiss Air Force
 Venezuela
 FR Yugoslavia
 Zaire

Former civilian operators

[edit]
 Slovakia

Specifications (SA 316B)

[edit]

Data from Jane's All The World's Aircraft 1976–77[128]

General characteristics

  • Crew: 2
  • Capacity: 5 passengers
  • Length: 10.03 m (32 ft 11 in)
  • Height: 3 m (9 ft 10 in)
  • Empty weight: 1,143 kg (2,520 lb)
  • Gross weight: 2,200 kg (4,850 lb)
  • Powerplant: 1 × Turbomeca Artouste IIIB turboshaft, 649 kW (870 hp) derated to 425 kW (570 hp)
  • Main rotor diameter: 11.02 m (36 ft 2 in)
  • Main rotor area: 95.38 m2 (1,026.7 sq ft)

Performance

  • Maximum speed: 210 km/h (130 mph, 110 kn) at sea level
  • Cruise speed: 185 km/h (115 mph, 100 kn)
  • Range: 540 km (340 mi, 290 nmi)
  • Service ceiling: 3,200 m (10,500 ft)
  • Rate of climb: 4.3 m/s (850 ft/min)

See also

[edit]

Related development

Aircraft of comparable role, configuration, and era

Related lists

References

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Notes

[edit]

Citations

[edit]
  1. ^ a b c d e f Trevithick, Joseph. "The French Navy Is Finally Retiring These Antique Helicopters After 55 Years of Service." Archived 28 June 2018 at the Wayback Machine thedrive.com, 22 January 2018.
  2. ^ a b c "1955: SE3130 "Alouette II"." Archived 22 December 2015 at the Wayback Machine Eurocopter, Retrieved: 20 December 2015.
  3. ^ Boyne 2011, p. 101.
  4. ^ Boyne 2011, p. 271.
  5. ^ McGownen 2005, p. 226.
  6. ^ "FAI Record ID #9874 – Altitude without payload. Class E-1 (Helicopters), turbine Archived 17 December 2014 at the Wayback Machine" Fédération Aéronautique Internationale (FAI). Retrieved: 21 September 2014.
  7. ^ Taylor 1966, p. 2.
  8. ^ a b c d e f g h i j k l m n "Early history 1920 - 1990". Airbus Helicopters. 2015. Archived from the original on 19 February 2018. 1959: SA3160/ SA316/ SA319 B "Alouette III".
  9. ^ a b McGownen 2005, p. 75.
  10. ^ Polmar and Kennedy 1981, p. 32.
  11. ^ "Early history 1920 - 1990". Airbus Helicopters. 2015. Archived from the original on 19 February 2018. 1959: SA3160/ SA316/ SA319 B "Alouette III".
  12. ^ a b c "IAF's oldest helicopter Chetak to mark 60 years in action next month". Hindustan Times. 29 March 2022. Retrieved 3 April 2024.
  13. ^ McGownen 2005, p. 227.
  14. ^ "IAR 316". Military Equipment Guide With Photos. Retrieved 3 April 2024.
  15. ^ Air Force Magazine. Air Force Association. July 1985.
  16. ^ a b "HAL Delivers Chetak Helicopter to Indian Navy". GBP. Retrieved 3 April 2024.
  17. ^ "Adiós Alouette". Archived from the original on 8 December 2010.
  18. ^ "Argentine Navy's Final Alouette III Retired". Air Forces Monthly (275). Key Publishing Ltd: 24. March 2011. ISSN 0955-7091.
  19. ^ "Father Christmas always arrives in a helicopter." Archived 29 June 2018 at the Wayback Machine listeningtothepast.com.au, 2 December 2017.
  20. ^ "Bundesheer - Waffen und Gerät - "Alouette" III". www.bundesheer.at.
  21. ^ Donald, David (28 December 2021). "Austria To Replace Alouette IIIs with Leonardo AW169s | AIN". Aviation International News. Retrieved 26 October 2023.
  22. ^ "Alouette III in Österreichische Luftstreitkräfte". Retrieved 16 February 2024.
  23. ^ "Armed Forces Overviews: Bangladesh". Scramble. Archived from the original on 15 December 2013. Retrieved 12 March 2015.
  24. ^ "BAF History – Bangladesh Air Force". www.baf.mil.bd. Archived from the original on 4 April 2017. Retrieved 3 April 2017.
  25. ^ Schrøder, Hans (1991). "Royal Danish Airforce". Ed. Kay S. Nielsen. Tøjhusmuseet, 1991, p. 1–64. ISBN 87-89022-24-6.
  26. ^ Boyne 2011, p. 74.
  27. ^ a b Donald 1997, p. 22.
  28. ^ Laurent Lagneau (5 December 2017). "La Marine nationale envisage de louer des hélicoptères civils d'occasion pour remplacer ses Alouette III" (in French). Zone militaire. Archived from the original on 7 February 2018. Retrieved 23 January 2018.
  29. ^ Cabirol, Michel. "En attendant le H160, l'armée va louer des Dauphin pour remplacer ses antiques Alouette." Archived 23 January 2018 at the Wayback Machine La Tribune, 19 January 2018.
  30. ^ "French frigate docks in Vietnam for helicopter repairs - VnExpress International". e.vnexpress.net. Archived from the original on 12 March 2021.
  31. ^ "Les Alouette III terminent leur carrière embarquée avec Corymbe et RIMPAC | Mer et Marine". 30 June 2022.
  32. ^ a b "French armed forces wave goodbye to the Alouette". Vertical Mag. 13 January 2023. Retrieved 23 October 2023.
  33. ^ "New Wings for the Irish Air Corps". airsceneuk.org.uk. Archived from the original on 3 March 2016. Retrieved 3 July 2015.
  34. ^ a b Rahul Singh (5 January 2017). "Cheetah, Chetak choppers to retire after string of crashes raise safety concerns". Hindustan Times. Archived from the original on 24 January 2018. Retrieved 23 January 2018.
  35. ^ "The Chetak’s Hyderabad connect." Archived 28 June 2018 at the Wayback Machine Deccan Chronicle, 20 December 2017.
  36. ^ "HAL delivers Namibian helicopters". defenceWeb. 15 February 2011. Archived from the original on 24 January 2018. Retrieved 23 January 2018.
  37. ^ Upreti 2008, p. 119.
  38. ^ Raghuvanshi, Vivek. "Indian Navy floats $10B helicopter acquisition program." defensenews.com, 23 August 2017.
  39. ^ "Operation Khukri". UN Ops involving the Indian Air Force. Vayu Sena Tripod. Retrieved 13 July 2012.
  40. ^ Venckunas, Valius (18 April 2021). "The time when India had dancing elephant helicopters". aerotime.aero
  41. ^ Lobo, Carol (7 October 2021). "Is It a Bird, Is It a Plane? It's a 'Flying Elephant'!". liveindiahistory.com
  42. ^ Hemanth (24 July 2019). "HAL delivers Chetak helicopter to Indian Navy". Naval Technology. Retrieved 3 April 2024.
  43. ^ a b "Switzerland Gives Its Alouette III Helicopters to Pakistan to Reinforce Search and Rescue Assets." Archived 2 February 2017 at the Wayback Machine defense-aerospace.com, 8 September 2010.
  44. ^ Defence 360°, Victor Barreira / (5 March 2020). "The last SE3160 Alouette III light utility helicopters of the @fap_emfa are scheduled to be withdrawn from service in April. The type was replaced by five AW119 Mk II Koala helicopters purchased from @Leonardo_livepic.twitter.com/ofYtZLJuQm". @Defence360. Retrieved 2 April 2020.{{cite web}}: CS1 maint: numeric names: authors list (link)
  45. ^ a b Releases, DP Press (21 October 2018). "Portuguese Air Force Orders Five AW119Kx Koala Multirole Helicopters". DefPost. Retrieved 2 April 2020.[permanent dead link]
  46. ^ a b c "S. Korea retires last Alouette-III naval helicopters". en.yna.co.kr. 3 December 2019.
  47. ^ a b Cocks 2015, p. 18.
  48. ^ a b Cocks 2015, p. 20.
  49. ^ Cocks 2015, p. 19.
  50. ^ "Rhodesian Air Force – No 7 Squadron". Rhodesian Army Association. Archived from the original on 30 November 2013. Retrieved 14 December 2013.
  51. ^ Cocks 2015, pp. 20–22.
  52. ^ Cocks 2015, pp. 21–22.
  53. ^ a b c d Wessels, André. "The South African Air Force, 1920–2012: A Review of its History and an Indication of its Cultural Heritage." Archived 28 June 2018 at the Wayback Machine Scientia Militaria, vol 40, no 3, 2012, pp. 222–249.
  54. ^ a b Dean Wingrin. "The South African Air Force". saairforce.co.za. Archived from the original on 4 July 2015. Retrieved 3 July 2015.
  55. ^ Brümmer, Stefaans and Craig McKune. "South Africa's helicopter gift for Mugabe." Archived 28 June 2018 at the Wayback Machine Mail & Guardian, 25 January 2013.
  56. ^ SABC: Zim helicopter interdict confirmed. Archived 2 December 2013 at the Wayback Machine sabc.co.za, 2 February 2013.
  57. ^ "South African Alouette IIIs apparently destined for Namibia, not Zimbabwe." Archived 29 June 2018 at the Wayback Machine defenceweb.co.za, 18 February 2014.
  58. ^ "2014 August 17 – Times of Suriname – grootste landelijke dagblad van Suriname". Times of Suriname – grootste landelijke dagblad van Suriname. Archived from the original on 6 October 2014. Retrieved 3 July 2015.
  59. ^ "Starnieuws – Eerste Chetak helikopter in elkaar gezet op basis Luchtmacht". starnieuws.com. Archived from the original on 3 February 2015. Retrieved 3 July 2015.
  60. ^ "Starnieuws – Luchtmacht neemt Chetak-helikopters in gebruik". starnieuws.com. Archived from the original on 4 July 2015. Retrieved 3 July 2015.
  61. ^ Eurocopter Press Release – First Eurocopter EC635 For Swiss Air Force Takes To The Air Archived 26 September 2007 at the Wayback Machine
  62. ^ Chant 2014, pp. 348–349.
  63. ^ a b c d Direction Générale de l'Aviation Civile (DGAC) (June 1985). "Fiche de Navigabilité No. 61" (in French).
  64. ^ a b c d Federal Aviation Administration (FAA) (10 January 2014). "Type Certificate Data Sheet No. H1IN".
  65. ^ a b c d European Aviation Safety Agency (EASA) (14 February 2017). "Type Certificate Data Sheet No. EASA.R.123" (PDF).
  66. ^ a b c d e Chant 2014, p. 349.
  67. ^ a b Chant 2014, pp. 349–415.
  68. ^ Wood, J.R.T (2009). Counter-strike From the Sky: The Rhodesian All-arms Fireforce in the War in the Bush 1974–1980. 30° South Publishers. ISBN 978-1-920143-33-6.
  69. ^ "SA 3164 "Alouette Canon" – Stingray's List of Rotorcraft". google.com. Archived from the original on 13 July 2015. Retrieved 3 July 2015.
  70. ^ McGownen 2005, p. 204.
  71. ^ Zhirokhov, Mikhail (27 September 2014). "Ранняя пташка". warspot.ru (in Russian).
  72. ^ a b c d e f g h i j k l m n o p q r s "World Air Forces 2018". Flightglobal Insight. 2018. Archived from the original on 6 February 2018. Retrieved 4 August 2018.
  73. ^ Martin, Guy. "Mauritius commissions patrol vessel, receives two helicopters – defenceWeb". www.defenceweb.co.za. Archived from the original on 18 January 2017. Retrieved 19 January 2017.
  74. ^ "World Air Forces 1975". flightglobal.com. p. 291. Archived from the original on 16 May 2013. Retrieved 23 March 2013.
  75. ^ "Comando de Aviacion Naval Argentina Alouette III". Archived from the original on 13 June 2013. Retrieved 30 March 2013.
  76. ^ "Austrian Air Force Alouette III – Time to say goodbye!". Scramble. 28 May 2024.
  77. ^ a b van Herk, Hans (8 July 2021). "Belgium says goodbye to Alouette 3". www.scramble.nl.
  78. ^ Jowett 2016, p. 18.
  79. ^ "World Air Forces 1983". flightglobal.com. p. 327. Archived from the original on 6 January 2015. Retrieved 30 March 2013.
  80. ^ "World Air Forces 1987". flightglobal.com. p. 44. Archived from the original on 16 May 2013. Retrieved 30 March 2013.
  81. ^ "World Air Forces 1975". flightglobal.com. p. 293. Archived from the original on 21 May 2013. Retrieved 30 March 2013.
  82. ^ "All-Time Aircraft Used List | Cameroon Air Force".
  83. ^ "Armada de Chile Alouette III". Archived from the original on 13 June 2013. Retrieved 30 March 2013.
  84. ^ "Kongelige Danske Marine Alouette III". Archived from the original on 13 June 2013. Retrieved 30 March 2013.
  85. ^ "World Air Forces 1987". flightglobal.com. p. 50. Archived from the original on 17 May 2013. Retrieved 30 March 2013.
  86. ^ "Armada Ecuatoriana Alouette III". Archived from the original on 13 June 2013. Retrieved 30 March 2013.
  87. ^ "Fuerza Aerea Salvadoreña Alouette III". Archived from the original on 13 June 2013. Retrieved 30 March 2013.
  88. ^ "Armée de L'air SA 316". Archived from the original on 11 April 2013. Retrieved 16 April 2013.
  89. ^ "World Air Forces 1983". flightglobal.com. p. 338. Archived from the original on 21 May 2013. Retrieved 30 March 2013.
  90. ^ "La Marine Nationale dit adieu à la mythique Alouette III". 9 December 2022.
  91. ^ "Securite Civile Alouette III". Archived from the original on 13 June 2013. Retrieved 30 March 2013.
  92. ^ "World Air Forces 2013" (PDF). Flightglobal Insight. 2013. Archived (PDF) from the original on 16 December 2012. Retrieved 30 March 2013.
  93. ^ "Aircraft Fleet". Hellenic Navy Official Website. Archived from the original on 27 May 2024. Retrieved 7 September 2024.
  94. ^ "World Air Forces 1987". flightglobal.com. p. 59. Archived from the original on 17 December 2014. Retrieved 30 March 2013.
  95. ^ "World Air Forces 1983 pg .346". flightglobal.com. Archived from the original on 21 May 2013. Retrieved 30 March 2013.
  96. ^ "Aerospatiale SA 319B | Guyana Defence Force". 19 April 2016.
  97. ^ "Royal Hong Kong Aux. Air Force Alouette III". Archived from the original on 13 June 2013. Retrieved 30 March 2013.
  98. ^ "World Air Forces 1983". flightglobal.com. p. 352. Archived from the original on 21 May 2013. Retrieved 30 March 2013.
  99. ^ "Aer Chór na hÉireann Alouette III". Archived from the original on 13 June 2013. Retrieved 30 March 2013.
  100. ^ "World Air Forces 1983". flightglobal.com. p. 358. Archived from the original on 21 May 2013. Retrieved 30 March 2013.
  101. ^ "World Air Forces 1983". flightglobal.com. p. 359. Archived from the original on 21 May 2013. Retrieved 30 March 2013.
  102. ^ a b c "World Air Forces 1987". flightglobal.com. p. 68. Archived from the original on 21 July 2015. Retrieved 30 March 2013.
  103. ^ "World Air Forces 1983". flightglobal.com. p. 360. Archived from the original on 21 May 2013. Retrieved 30 March 2013.
  104. ^ a b "World Air Forces 1987". flightglobal.com. p. 72. Archived from the original on 21 May 2013. Retrieved 30 March 2013.
  105. ^ a b "World Air Forces 1987". flightglobal.com. p. 73. Archived from the original on 21 May 2013. Retrieved 30 March 2013.
  106. ^ Cooper 2017, p. 34.
  107. ^ "Alouette III helicopter". defensie.nl. Archived from the original on 19 April 2014. Retrieved 23 May 2014.
  108. ^ "Bluebird's last flight – Vertical Magazine". Archived from the original on 13 April 2016. Retrieved 4 January 2016.
  109. ^ "World Air Forces 1987". flightglobal.com. p. 74. Archived from the original on 9 January 2015. Retrieved 30 March 2013.
  110. ^ "IDEAS 2018: Pakistan Air Force Updates". 17 December 2018.
  111. ^ a b c "World Air Forces 1987". flightglobal.com. p. 77. Archived from the original on 21 May 2013. Retrieved 30 March 2013.
  112. ^ "World Air Forces 1971". flightglobal.com. p. 936. Archived from the original on 21 May 2013. Retrieved 30 March 2013.
  113. ^ "World Air Forces 1987". flightglobal.com. p. 80. Archived from the original on 17 May 2013. Retrieved 30 March 2013.
  114. ^ "World Air Forces 1975". flightglobal.com. p. 308. Archived from the original on 21 May 2013. Retrieved 30 March 2013.
  115. ^ "World Air Forces 1990". flightglobal.com. p. 68. Archived from the original on 21 May 2013. Retrieved 30 March 2013.
  116. ^ "Republic of Singapore Air Force Alouette III". Helis.com. Archived from the original on 13 June 2013. Retrieved 30 March 2013.
  117. ^ "Suid-Afrikaanse Lugmag Alouette III". Archived from the original on 13 June 2013. Retrieved 30 March 2013.
  118. ^ "Alouette III". Retrieved 2 January 2021.
  119. ^ "Military Helicopter Market 1971". flightglobal.com. p. 581. Archived from the original on 21 May 2013. Retrieved 3 April 2013.
  120. ^ "Ejercito del aire Alouette III". Archived from the original on 14 June 2013. Retrieved 30 March 2013.
  121. ^ "Fuerzas Aeromóviles del Ejército de Tierra Alouette III". Archived from the original on 14 June 2013. Retrieved 30 March 2013.
  122. ^ "schweizer luftwaffe Alouette III". Helis.com. Archived from the original on 13 June 2013. Retrieved 30 March 2013.
  123. ^ "World Air Forces 1983". flightglobal.com. p. 379. Archived from the original on 21 May 2013. Retrieved 30 March 2013.
  124. ^ "Fuerza Aerea de Venezuela Alouette III". Archived from the original on 14 June 2013. Retrieved 30 March 2013.
  125. ^ "World Air Forces 1987". flightglobal.com. p. 67. Archived from the original on 15 July 2015. Retrieved 30 March 2013.
  126. ^ "World Air Forces 1987". flightglobal.com. p. 106. Archived from the original on 16 May 2013. Retrieved 30 March 2013.
  127. ^ "Alouette III at Poprad-Tatry airport. First SAR helicopter in Slovakia. Originally registered in 1990 as OK-FIT". Planes.cz. Retrieved 14 January 2022.
  128. ^ Taylor 1976, p. 39.

Bibliography

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  • Andrade, John (1982). Militair 1982. London, United Kingdom: Aviation Press Limited. ISBN 0-907898-01-7.
  • Boyne, Walter (2011). How the Helicopter Changed Modern Warfare. Pelican Publishing. ISBN 978-1-4556-1568-1.
  • Chant, Christopher (2014). A Compendium of Armaments and Military Hardware. Routledge. ISBN 978-1134646685.
  • Cocks, Kerrin (2015). Rhodesian Fire Force 1966–80. Helion. ISBN 978-1-91029-405-5.
  • Cooper, Tom (2017). Hot Skies Over Yemen, Volume 1. Solihull, United Kingdom: Helion & Company Publishing. ISBN 978-1-912174-23-2.
  • Donald, David, ed. (1997). The Complete Encyclopedia of World Aircraft. New York, United States: Barnes & Noble Books. ISBN 0-7607-0592-5.
  • Hatch, Paul (5–11 December 1990). "World's Air Forces". Flight International. pp. 35–81.
  • Hoyle, Craig (6–12 December 2016). "World Air Forces Directory". Flight International. Vol. 190, no. 5566. pp. 22–53.
  • Jowett, Philip (2016). Modern African Wars (5): The Nigerian-Biafran War 1967–70. Oxford, United Kingadom: Osprey Publishing Press. ISBN 978-1472816092.
  • Lefebvre, Jean-Michel (October 1982). ""Alouette"je te plumerai: Les "Alouettes" III du CoTaM" ["Alouette" I Pluck You: The "Alouettes" of CoTaM]. Le Fana de l'Aviation (in French) (155): 43–49. ISSN 0757-4169.
  • McGownen, Stanley (2005). Helicopters: An Illustrated History of Their Impact. ABC-CLIO. ISBN 1-8510-9468-7.
  • Polmar, Norman; Kennedy, Floyd D. (1981). Military helicopters of the world: military rotary-wing aircraft since 1917. Naval Institute Press. ISBN 0-8702-1383-0.
  • Taylor, John W. R. (1966). Jane's All The World's Aircraft 1966–67. London, United Kingdom: Sampson Low, Marston & Company.
  • Taylor, John W R., ed. (1976). Jane's All The World's Aircraft 1976–77. London, United Kingdom: Jane's Yearbooks. ISBN 0-354-00538-3.
  • Upreti, Bhuwan Chandra (2008). Maoists in Nepal: From Insurgency to Political Mainstream. Gyan Publishing House. ISBN 978-8-1783-5687-7.
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