|An AH64D at the Duxford Autumn Airshow 2010|
|National origin||United States / United Kingdom|
|First flight||September 1998|
|Primary user||Army Air Corps|
|Program cost||£4.1 billion|
|Developed from||Boeing AH-64D Apache Longbow|
The AgustaWestland Apache is a licence-built version of the Boeing AH-64D Apache Longbow attack helicopter for the British Army Air Corps. The first eight helicopters were built by Boeing; the remaining 59 were assembled by Westland Helicopters (now part of Leonardo) at Yeovil, Somerset in England from Boeing-supplied kits. Changes from the AH-64D include Rolls-Royce Turbomeca engines, a new electronic defensive aids suite and a folding blade mechanism allowing the British version to operate from ships. The helicopter was initially designated WAH-64 by Westland Helicopters and was later given the designation Apache AH Mk 1 (also written as "Apache AH1") by the Ministry of Defence.
The Apache was a valued form of close air support in the conflict in Afghanistan, being deployed to the region in 2006. The Apache has been an object of controversy over the fitting of some weapons, such as cluster munitions. Naval trials and temporary deployments at sea have proven the aircraft as an able platform to operate from the decks of ships, which is a unique application of the Apache amongst its operators. British Apaches have also served in the NATO 2011 military intervention in Libya operating from Royal Navy ships.
The requirement for a new attack helicopter was identified by the British government in the early 1990s. In 1993, invitations to bid were issued. Bids received included the Eurocopter Tiger, a modernised Bell AH-1 SuperCobra, the AH-64 Apache, the Boeing/Sikorsky RAH-66 Comanche, and the Agusta A129 Mangusta. Both the Tiger and Cobra variant were derided for requiring development, and thus risk, while the Apache was combat proven, however its performance in the First Gulf War was criticised by competitors. Westland and the Apache was selected in July 1995, a contract for 67 helicopters was signed in 1996.
In September 1998, Westland produced the first prototype WAH-64 Apache under licence from Boeing. The first nine Apache AH1s were authorised for service by the director of British Army Aviation on 16 January 2001. The 67th and final Apache was handed over to the British Army in July 2004. The helicopter fleet's cost was around £3.1 billion, with a total acquisition cost of £4.1 billion. Reliability had been questioned by US Apache operations, the entire fleet in the Balkans had been grounded due to serious tail rotor failures in 1999. In 1998, the Longbow radar's development ran into problems regarding its weight, impact upon overall agility, and data transfer abilities. These problems with key aircraft components, and fleet's high cost, led to calls for its cancellation in 1999.
When the requirement for the Apache had been formalised in the early 1990s, military doctrine assumed that a large conventional armoured assault from the Eastern Bloc was Britain's main threat. Following the collapse and break-up of the Soviet Union, the concepts of flexibility and rapid response took precedence. The UK's Strategic Defence Review called for Apaches to undertake amphibious attack missions, operating from the helicopter carrier HMS Ocean, the Invincible class aircraft carriers and their successors, the Queen Elizabeth class aircraft carriers, and possibly the amphibious assault vessels HMS Bulwark and Albion. Each squadron equipped with the Apache should have eight operational aircraft.
The Westland Apache experienced delays in entering service due to complications with the modifications made for British service. Prior to the Apache entering service in 2004, several development problems were noted, including a lack of the ability to securely communicate with other helicopters and a risk of damage to the tail rotor and airframe from firing its Hellfire missiles. The problem with using the Hellfire was debris generated by the firing of missiles, both the Hellfire and CRV7 rockets, could strike the body of the aircraft and cause damage; resolving this issue created a delay to training programmes. These problems were corrected prior to entering service, a secure communications suite was installed and Hellfire missiles are routinely fired by Apaches. In 2002, government sources stated that full operational capability was set to be achieved by 2010.
In 2005, an out-of-service date for the Apache was forecast at 2030, but the Army is looking at a capability sustainment programme (CSP) that will extend their life to 2040. It was thought that updates would be necessary by 2017 because the US Army is to withdraw support for the AH-64D Block I on which the British Apaches are based, but US budget problems pushed this back to 2019 or 2020. Britain was to select from the Block III upgrades of the AH-64E by 2014; options range from abandoning the capability altogether to buying brand new Block III helicopters but Boeing believe it is most likely that Britain will remanufacture, putting the existing engines and avionics into new airframes.
In August 2015, the UK requested through a Foreign Military Sale, the upgrade of 50 of its Apaches to AH-64E standard. In July 2016, the UK ordered 50 AH-64Es through the US Foreign Military Sales (FMS) programme instead of upgrading their AgustaWestland-built AH-64s. Leonardo Helicopters (formerly AgustaWestland) will continue to lead the support the existing Apache AH1s until they are retired from service in 2023–24.
|BBC Tour of an Apache|
Several deviations were made to the standard Apache design used by the US and those exported to other countries. One major difference is the use of a pair of Rolls-Royce Turbomeca RTM322 01/12 engines, replacing the original General Electric T700-GE-701C engines. The Rolls-Royce engine produces 1,565 kW (2,100 hp) vs. 1,410 kW (1,890 hp) for the GE T700C engine. Compared to many helicopters used by coalition forces in Afghanistan, the Apache required less modification to serve in the region due to special filters incorporated into the engine design. Another change is the folding blade mechanism to stow the helicopters in confined spaces; the rotor blades also have anti-ice protection to allow operations in Arctic environments.
There were changes made to the sensor and avionics outfitting the craft as well; connectivity with the BOWMAN secure communications system to interact with other British military units being a significant one. The Leonardo (formerly Selex ES) Helicopter Integrated Defensive Aids System (HIDAS) was also fitted. The HIDAS system was retrofitted onto the aircraft in mid-2004 just prior to entering service, along with several redesigned composite bodywork components. An eye-safe training laser to allow the Apache to function as a target designator was also installed.
Instead of the American Hydra 70 rocket pods, the Westland Apache can carry up to 76 CRV7 rockets. The CRV7 uses a modular warhead: "a high explosive, semi-armour piercing warhead for attacks on unarmoured targets and a kinetic energy penetrator, which contains no explosive, for attacks on armoured targets". There used to be a third type of warhead: the Multi-Purpose Sub Munition (MPSM), which was a controversial weapon as it has been classified as a cluster bomb; each rocket contained nine M73 submunitions. In May 2008, several senior officers, such as General David Ramsbotham spoke out against British plans to keep the weapon. In the same month, Britain, as one of the 111 participating nations, agreed to ban cluster bombs on humanitarian grounds. Britain destroyed the last of its CRV7 MPSMs in July 2009.
Like the US AH-64D Apache Longbow, the Apache AH1 carries a fire-control radar (FCR) and Radar Frequency Interferometer (RFI), providing an integrated surveillance and attack system. The 'Longbow’ radar is the bulbous unit over the rotor hub assembly; radar placement above the rotors allows the Apache to hover behind cover scanning for targets, with only the radar unit exposed. Additionally, the Longbow radar can monitor traffic in the Apache's airspace. The radar can also be used for surveillance and terrain profiling. A modem is interfaced into the Longbow radar and other sensor systems to relay information to other aircraft, this allows other Apaches to fire on targets identified by only a single helicopter.
AgustaWestland have since made several upgrades to Britain's Apache fleet. In May 2005, a $212 million contract was awarded to equip all 67 Mk1 helicopters with the Apache Arrowhead sensor system upgrade, to be completed by 2010. In 2009, it was announced that AgustaWestland was also integrating new external fuel tanks with ballistic protection. Some of the internal fuel tanks can be removed, Apaches in Afghanistan may have these removed to allow for extra ammunition for the cannon to be fitted. It has been suggested that advanced rotor blades and additional controls to improve the agility of the aircraft may be fitted in a mid-life update of the fleet. There is also a proposal to upgrade WAH-64s to the AH-64E Guardian standard.
In May 2005, the first Apache-equipped regiment achieved operational status. The Westland Apache has replaced the Westland Lynx AH7 as the British Army's tactical attack helicopter. The Apache is currently operated by two regiments of the Army Air Corps (3 Regt AAC and 4 Regt AAC) as part of 16 (Air Assault) Brigade. The Apache is intended to operate in the armed reconnaissance and attack roles, similar to the US usage of Apaches during the 1991 Gulf War. Unlike US versions, the Westland Apache has been partially navalised and now serves aboard Royal Navy ships in addition to its land-based role. It achieved maritime certification in December 2005 aboard HMS Ocean. On 17 November 2006, HMS Ark Royal became the first aircraft carrier to land an Apache AH1.
They first appeared in combat as part of Operation Herrick in Afghanistan in May 2006. In August 2006, the intense usage of Apaches in Afghanistan led to British commanders admitting that weapons and spare parts were being used at a far greater rate, and subsequently a greater cost, than anticipated. On 11 November 2007, it was reported that half of the Apache gunships in British service had been grounded as they had fallen below the level considered "fit for purpose", along with several other British Helicopters such as the Chinook and Merlin HC3. By November 2008, the situation had further declined, out of 67 aircraft only 20 were available for combat operations. In 2009, AgustaWestland was awarded a contract for support services for the Apache and many components such as the Longbow radar; in the following months senior officers noted that the support change had resulted in higher availability. In June 2011, civilian maintainers of the Apache at Wattisham Airfield threatened industrial action over a pay dispute.
In October 2008 it was announced that Prince Harry had begun the process of qualifying to become an Apache pilot. In May 2010, the terrorist organisation Al Qaeda threatened to abduct the prince if he piloted an Apache in Afghanistan. In April 2011, Prince Harry was promoted to captain following his completion of Apache conversion training. In June 2011, sections of the media reported that Prince Harry was to deploy to Afghanistan as an Apache pilot in 2012. He subsequently deployed to Afghanistan as part of 662 Squadron in September 2012.
Three Apaches were deployed to Bardufoss Air Station in Norway in January 2019. The deployment, known as Exercise Clockwork, represented the aircraft's first cold weather training within the Arctic Circle.
The Apache's first operational tour was as part of 16 Air Assault Brigade in Afghanistan; there were eight Apache AH1s deployed in Afghanistan in February 2007. These were drawn from No. 656 Squadron and No. 664 Squadron of 9 Regiment AAC, based at Dishforth Airfield. Unlike their American counterparts in Afghanistan, the Apache AH1 is deployed with its Longbow Fire Control Radar to enable the pilot to better manage traffic in their airspace. Initially pilots had to often fly for 16–18 hours at a time due to the low number of Apaches in the theatre; typically each Apache would be stationed in Afghanistan for eight weeks before returning to Britain for roughly eight weeks of maintenance. On 22 May 2006, a UK Apache operating in Afghanistan's Helmand province used a Hellfire missile to destroy an abandoned French vehicle to protect sensitive equipment.
|Three soldiers strapped to Apache's wings|
|BBC News coverage|
The Apache quickly became a highly valued tool against insurgents, able to escort ground and air forces and rapidly respond to Taliban forces on the ground. Major Huw Williams, second in command of 3rd Battalion, The Parachute Regiment, stated that: "We're really impressed [with the Apache]. It's a very effective beast." It has been noted that Taliban forces refer to the aircraft as the "Mosquito".
On 13 January 2007, a 200-strong British force, led by Royal Marines, launched an operation to attack Jugroom Fort, a major Taliban base in southern Helmand Province. After several hours of intense fighting, the Marines regrouped and it was discovered that Lance Corporal Mathew Ford of 45 Commando Royal Marines was missing. A rescue mission was launched using four volunteers, Royal Marines and a Royal Engineer, strapped to the stub-wings of two Apaches. The helicopters could not travel above 50 mph to ensure the safety of the extra passengers from rotor downwash. The Apaches landed under fire inside the compound, after which the rescuers dismounted and recovered the body of LCpl Ford. Ford's body was flown out in the same manner that the soldiers arrived. Other Apaches hovered above, providing suppressive fire throughout. None of the rescuers were injured in the recovery mission and they were later hailed for their bravery.
In May and June 2008, British and Afghan National Army forces conducted Operation Eagle's Eye, aimed at disrupting Taliban activities to the south of Musa Qaleh; a key portion of which was a major night-time helicopter raid, rapidly deploying members of 2nd Battalion, Parachute Regiment into the town. In June 2008, a British Apache fired a thermobaric Hellfire missile; the controversial usage of such weapons was approved after extensive legal and ethical evaluations within the MoD. In June 2008, a Taliban leader and several cell members were killed in Helmand Province by a Hellfire missile launched by an Apache of the 664 Army Air Corps. There was a friendly fire incident in July 2008, in which an Apache fired upon a position thought to be held by enemy forces, but instead hit members of a British patrol. This was the first time that a British aircraft had been involved in a blue-on-blue incident in Afghanistan. Although the Apaches have become targets for insurgents, as of November 2008[update] no British Apaches have been lost to enemy fire. In September 2008, an Apache was seriously damaged by a crash shortly after takeoff in Helmand province, no loss of life occurred but the airframe was written off.
In early to mid-2009, several narcotics and bomb-making facilities were raided by British forces, supported by Apaches. In April 2009, it was reported that an Apache had been used to intercept a suicide bombing attack in Helmand province. During the Summer of 2009, British Apaches were an integral component of Operation Panther's Claw, which was aimed at pushing insurgents out of civilian areas in the runup to the 2009 Afghan Elections. During this major offensive, Apaches from the UK routinely flew alongside US Cobra helicopters to provide air support to soldiers of 3rd Battalion Black Watch and the Royal Marines conducting ground operations. During the Summer 2009 operations, a senior Taliban leader, Mullah Mansur, and several accomplices were killed in a precision strike launched by an Apache.
On 13 October 2010, newspapers reported that Army Air Corps maintenance workers had accidentally sent a live CRV7 missile in regular mail from Camp Bastion to the UK, a mistake which inspections had missed four times; when the missile was discovered it sparked an evacuation, the MoD later changed procedure in regards to the incident. On 25 July 2011, the MoD announced that during a combat operation in the Nahr-e-Saraj district of Helmand province, several Afghan children had been injured from crossfire by an Apache; they were flown to Camp Bastion for medical treatment.
From 2006 to April 2014, British Apache helicopters flew 50,000 hours in Afghanistan, representing one-third of all UK Apache flying.
|Footage of nighttime Apache operations|
In May 2011, the MoD announced that the Apache fleet had reached 100,000 hours flying time, and describing it as a "vital battlefield tool in Afghanistan". The Apache was also recognised as having established a "limited maritime strike capability" and were deploying on vessels such as HMS Ocean. On 17 May 2011, the Apache tested its Hellfire missiles against sea targets for the first time, 9 missiles were fired with a 100% success rate. Media speculation suggested that the speed on trialling and establishing an Apache maritime presence is due to the withdrawal of the British Aerospace Harrier II, as a stopgap replacement.
On 27 May 2011, military officials announced that Apaches would be deployed as part of Operation Ellamy, the ongoing military intervention in Libya. The helicopters operated from the flight deck of HMS Ocean in conjunction with French Eurocopter Tiger helicopters over Misrata. The Apaches were also to assist in Operation Unified Protector, the enforcement of an embargo and no-fly zone upon Libya. On 14 June 2011, reports of British preparation to evacuate Yemen emerged, involving Apache and Merlin helicopters operating from Royal Fleet Auxiliary vessels off the coast.
On 4 June 2011, Apaches struck targets within Libya for the first time, destroying a radar site and an armed checkpoint near the town of Brega. Further precision strikes were launched by Apaches, typical targets were mobile air defenses, and were occasionally engaged by AK-47 fire from ground troops. In early June, Apaches conducted attacks on Gaddafi loyalists assaulting the town of Misrata. On 13 June, British Apaches destroyed several inflatable boats with 30 mm cannon fire, believed to be Libyan Special Forces, before engaging and destroying multiple vehicles along the coastline, including an anti-aircraft system. On 25 June, in coordination with RAF Panavia Tornado strikes, Apaches attacked loyalist infantry and vehicles around Brega and its airfield. On 1 July, British Apaches were reportedly involved in a 'fierce' battle at the town of Khoms. On 2 July, Apaches destroyed several tanks and a bunker at a military camp near Zawiya. On 5 August, Apaches participated in the rebel push for the town of Zliten was reported.
By 21 June 2011, the Libyan government had dubiously claimed to have successfully shot down dozens of aircraft, including five Apaches; NATO denied these claims and no Apache losses have been acknowledged to date. On 8 July 2011, the MoD released information on the first month of Apache combat operations over Libya; noting that Apaches had engaged targets within Libya on 39 occasions. Apache operations over Libya have been heavily influenced and supported by NATO reconnaissance flights and intelligence missions; information is continually relayed to update target information, assess the threat of Surface to Air missiles (SAM), and the presence of civilians, enabling real time changes to mission profiles. On 6 August, Apaches struck a military communications facility and troops at Al Watiyah. Both the Apache and the Eurofighter Typhoon were withdrawn from Libyan operations in September 2011 as operational demands decreased.
- British Army Air Corps
- No. 653 Squadron AAC
- No. 662 Squadron AAC
- No. 663 Squadron AAC - to be operational Conversion Squadron from 2015
- No. 654 Squadron AAC (former operator)
- No. 656 Squadron AAC
- No. 664 Squadron AAC
- No. 668 Squadron AAC - Training Squadron
- No. 673 Squadron AAC- Training Squadron
Specifications (Apache AH1)
- Crew: 2
- Length: 17.7 m (58 ft 4 in with rotors turning)
- Rotor diameter: 14.6 m (48 ft)
- Height: 3.87 m (12 ft 8 in)
- Disc area: 168.11 m2 (1,809.5 ft2)
- Empty weight: 5,165 kg (11,387 lb)
- Loaded weight: 8,006 kg (17,650 lb)
- Max takeoff weight: 9,525 kg (21,000 lb)
- Powerplant: 2× Rolls-Royce/Turbomeca RTM322 turboshaft, 1,693 kW (2,270 hp) each
- Never exceed speed: 365 km/h (197 knots, 227 mph)
- Maximum speed: 293 km/h (158 knots, 182 mph)
- Cruise speed: 259 km/h (140 knots, 161 mph)
- Range: 537 km (290 nmi, 334 mi)
- Ferry range: 1,700 km (974 nmi, 1,121 mi)
- Service ceiling: 6,400 m (21,000 ft)
- Rate of climb: 12.7 m/s (2,500 ft/min)
- Guns: M230 Chain Gun, 1200 rounds
- Missiles: Hellfire (and Starstreak (proposed), Brimstone proposed)
- Rockets: CRV7 with Flechette (Tungsten dart) or High-Explosive Incendiary Semi-Armour Piercing (HEISAP) warheads. Until 2008 also MPSM with nine M-73 bomblets.
Aircraft of comparable role, configuration and era
- Bell AH-1Z Viper
- CAIC WZ-10
- HAL Light Combat Helicopter
- Eurocopter Tiger
- Kamov Ka-50
- Mil Mi-28
- TAI/AgustaWestland T-129
- Harbin WZ-19
- List of active United Kingdom military aircraft
- List of aircraft of the Army Air Corps
- List of aviation accidents and incidents during the Iraq War
- AgustaWestland 2011, p. 2.
- National Audit Office 2002, p. 8.
- Collins, Nick (16 June 2011). "Prince Harry to return to Afghanistan". The Telegraph.
- Ipsen, Erik (13 July 1995). "U.K. Must Choose 1 of 3 Attack Copters : Pitched Battle Near Done". The New York Times.
- Cook, Nick (1 May 1995). "High Noon For Tiger And Apache". Interavia Business & Technology.
- National Audit Office 2002, p. 6.
- Mcgowen 2005, p. 214.
- "British Army Receives 67th Apache In Ceremony Held At The Farnborough Air Show 2004". AgustaWestland. 21 July 2004. Archived from the original on 7 July 2011.
- "Repairs Planned For Army Helicopters". New York Press. 10 November 1999.
- "Some Apaches To Be Grounded 10 Months". Fayetteville Observer. 11 November 1999.
- "Army Aviation: Apache Longbow Weight and Communication Issues". U.S. Government Accountability Office. 15 September 1998.
- Maguire, Kevin (4 August 1999). "UK set to axe Apache". Daily Mirror. Archived from the original on 4 November 2012.
- National Audit Office 2002, pp. 9, 22–23.
- Heyman 2005, p. 114.
- National Audit Office 2002, p. 7.
- Smith, Michael (31 October 2002). "Warning over Apache helicopter failings". The Telegraph.
- Hencke, David (18 November 2003). "Helicopters 'at risk' of friendly fire". The Guardian.
- "Apache". British Army. Archived from the original on 15 March 2010. Retrieved 3 May 2010.
- Bishop and Laurier 2005, p. 47.
- National Audit Office 2002, p. 22.
- Hoyle, Craig (31 May 2005). "British Army stands up first Apache regiment". Flight International.
- Hoyle, Craig (28 November 2012). "UK weighing options for Apache attack helicopter upgrade". Flight International.
- Jennings, Gareth (30 October 2013). "ADEX 2013: US sequestration buys time for UK Apache decision makers". IHS Jane's Defence Weekly.
- "United Kingdom – AH-64E APACHE GUARDIAN Attack Helicopters". Defense Security Cooperation Agency.
- "MOD orders new fleet of cutting-edge Apache helicopters for Army". UK Ministry of Defence. 11 July 2016.
- "RTM 322". Turbomeca. Archived from the original on 3 August 2009. Retrieved 29 January 2010.
- Wyatt, Caroline (26 May 2011). "How UK's Apache helicopters could aid Libya mission". BBC News.
- "Apache Moves Closer To Front Line". Navy News. 11 May 2004.
- "General Dynamics Awarded 25 Million Pounds Sterling Apache BOWMAN Connectivity Contract". PR Newswire. 26 June 2003.
- "Selex to focus on integrated DAS at Old Crows". Shepard. 18 October 2009.
- Hoyle 2004, p. 59.
- "Defense industry contracts". Flight International. 18 February 2003.
- RAF History, CRV-7 Archived 4 April 2012 at the Wayback Machine.
- "House of Commons Hansard Written Answers for 25 Mar 2010 (pt 0002)".
- "Survey of Cluster Munition Policy and Practice, pub Human Rights Watch" (PDF). February 2007. p. 18.[permanent dead link]
- Myska, Sangita (19 May 2008). "UK seeks cluster bomb exemption". BBC News.
- "The great British bomb scandal". The Herald. Glasgow. 28 May 2011.
- "Envoys agree on treaty banning cluster bombs". GMA News Online. 29 May 2008. Archived from the original on 1 August 2012.
- Rayment, Sean (12 June 2005). "Give us an enemy to fight, says chief of Britain's Apache helicopter fleet". The Daily Telegraph.
- "Afghan Field Report: British WAH-64Ds". Defense Industry Daily. 26 November 2007.
- Martin, Lockheed. "AN/APR-48A Radar Frequency Interferometer" (PDF). Archived from the original (PDF) on 29 September 2011. Retrieved 20 July 2011.
- "Helicopter profile: Boeing AH-64 Apache". Flight International. Retrieved 2 February 2010.
- Hoyle, Craig (1 December 2008). "British Army receives first upgraded Apaches". Flight International.
- "United Kingdom Awards Lockheed Martin $212 Million Contract For Arrowhead System Production"[permanent dead link] Lockheed Martin. 2 May 2005.
- Jennings, Gareth (2009). Jane's international defense review: Volume 42. Jane's Information Group. p. 25.
- Finch 1996, p. 2.
- Chuter, Aaron Mehta, Andrew (8 August 2017). "UK Apache Upgrade Cleared by State". defensenews.com.
- "First Apache Attack Helicopter regiment fully operational". M2 Presswire. 25 May 2005. Archived from the original on 11 March 2012.
- "Awesome Apache ready for action". Daily Mail. 25 May 2005.
- "Apache Lands On U.K. Carrier Ark Royal". Aviation Today. 17 November 2006.
- Tweedie, Neil (28 August 2006). "Troops use up ammo as war with Taliban claims 14th life". The Telegraph.
- Watts, Robert (11 November 2007). "Half of Army gunships are grounded". The Daily Telegraph.
- Rayment, Sean (22 November 2008). "Fewer than one in three of Britain's Apache attack helicopters 'fit for purpose'". The Telegraph.
- "Supporting Britain's Apaches: AW's IOS Contract". Defense Industry Daily. 22 February 2010.
- "Base’s Apache engineers could take strike action."[permanent dead link] Bury Free Press, 20 June 2011.
- Larcombe, Duncan (27 October 2008). "Prince Harry rides the dragon". The Sun.
- "Al-Qaida threatens to abduct Prince Harry, if he flies Apache helicopter". The Times of India. 9 May 2010.
- Harrison, Paul (17 April 2011). "Prince Harry Reaches Rank Of Army Captain". Sky News. Archived from the original on 14 July 2012.
- "Prince Harry deployed to Afghanistan". BBC. 7 September 2012.
- Ricks, Rebecca (29 January 2019). "Exercise Clockwork: Army Apaches Make Arctic Debut". Forces Network. Retrieved 29 January 2019.
- "Parliamentary questions to The Secretary of State for Defence (Des Browne)". Hansard. 26 February 2007. 122586.
- Calvert, Denis J (February 2007). "Fact File: UK Air Power in Afghanistan". Aircraft Illustrated. Ian Allan. p. 34.
- Cairns, Dan (24 June 2011). "Precise and deadly: A pilot's view of the Apache". BBC News.
- "Keeping the Apache ready to take on the Taliban". MOD. 12 January 2011.
- Walsh, Declan (10 July 2006). "Apaches and Land Rovers versus a guy with a detonator". The Guardian.
- Harding, Thomas (23 June 2006). "Apache earns its stripes above the Afghan battlefield". The Daily Telegraph.
- "Marines attempt daring Apache rescue during Afghanistan Operation". Ministry of Defense. 17 January 2007. Archived from the original on 5 February 2007.
- Lewis 2009, pp. 1–3.
- "Troops made rescue bid for marine". BBC News. 17 January 2007.
- "Helicopter rescue marines hailed". BBC News. 22 January 2007.
- "British troops and ANA in Apache-backed operation". MOD. 4 June 2008. Archived from the original on 5 October 2011.
- Smith, Michael (22 June 2008). "Army 'vacuum' missile hits Taliban". The Times.
- "UK Apache fires Hellfire missiles to kill Taliban fighters". Frontier India. 30 June 2008. Archived from the original on 14 October 2009.
- "Nine hurt as British Apache fires on own troops". The Scotsman. 11 July 2008.
- Hickley, Matthhew; Divid Williams (12 July 2008). "Apache hellfire probe after gunship's blunder that left nine paras injured". Daily Mail.
- Hoyle, Craig (5 September 2008). "UK Apache crashes in Afghanistan, crew safe". Flight International.
- Hickley, Matthew (18 February 2009). "British soldiers seize heroin worth £50m in Afghanistan airborne assault". Daily Mail.
- "British Apaches Prevent Disruptions of Afghan Elections". Boeing. 20 June 2009. Archived from the original on 14 October 2012.
- Chandler, Neil (25 April 2011). "British Troops Set To Battle Koran Propaganda". Daily Star.
- "The Black Watch in strike at Taliban". Evening Telegraph. 5 May 2009. Archived from the original on 16 March 2012.
- "UK forces 'kill Taliban leader'". BBC News. 2 June 2009.
- "Bungling engineers send a LIVE missile from Afghanistan to Suffolk army airfield". Daily Mail. 13 October 2011.
- "Afghan children injured by UK Apache helicopter attack". BBC News. 25 July 2011.
- "British Apache helicopter injures children in Afghanistan". The Guardian. 25 July 2011.
- Apache flies 50,000 hours on operations in Afghanistan - Gov.UK, 14 April 2014
- "Apache clocks up 100,000 flying hours". Ministry of Defence. 26 May 2011.
- Hoyle, Craig (17 May 2011). "UK Apaches score 100% in maritime Hellfire tests". Flight International.
- "Brits Deploying Apache Choppers on Carriers Off Libya". defensetech.org. 24 May 2011.
- "UK Apaches Deployed In Libya In 24 Hours". Sky News. 27 May 2011.[permanent dead link]
- "Fearful Gaddafi 'hides in hospital'". The Independent. 27 May 2011.
- "Apaches get ready to help protect Libyan civilians". Ministry of Defence. 27 May 2011.
- Harding, Thomas (14 June 2011). "Britain to send Apache helicopters to Yemen". The Telegraph.
- "UK Apache helicopters used in Nato attacks". BBC News. 4 June 2011.
- Hennessey, Patrick (4 June 2011). "Apache strike steps up battle against Gaddafi". The Daily Telegraph.
- Sengupta, Kim (5 June 2011). "Libya: precision and restraint as Apaches hit their target". The Telegraph.
- Sherlock, Ruth (11 June 2011). "Gaddafi hammers Misrata frontline after UK Apache helicopters strike". The Scotsman.
- "Rebels push on as Apaches and RAF fighters strike Gaddafi's forces". British Forces News. 13 June 2011.
- Kiley, Sam (13 June 2011). "Is Nato's Mission In Libya Losing Momentum?". Sky News. Archived from the original on 16 June 2011.
- "UK ground attack aircraft and destroyer take on Gaddafi's forces". British forces News. 25 June 2011. Archived from the original on 22 March 2012.
- Hughes, Christ (1 July 2011). "British Apache helicopters in Libya launch fiercest blitz yet against Gaddafi thugs". Daily Mirror.
- "Libya: Air raid on Gaddafi military camp". BBC News. 2 July 2011.
- Kerr, Simeon (5 August 2011). "Libyan rebels prepare push towards Tripoli". Financial Times.
- Meo, Nick. "Libya: Nato deny Gaddafi troops shot down unmanned drone". The Telegraph, 21 June 2011.
- "NATO loses contact with drone chopper over Libya." The Hindu, 21 June 2011.
- Hoyle, Craig (8 July 2011). "Libya: British Army details Apache's success". Flight International.
- "UK Defence Official Sees Good Progress in Libya Operations". defpro.com. 27 June 2011. Archived from the original on 29 July 2012.
- "British Apache helicopters strike Libya targets". The Telegraph. 11 August 2011.
- "Typhoon and Apache return from Libya". defencemanagement.com. 27 September 2011. Archived from the original on 21 January 2013.
- "653 Squadron Army Air Corps". mod.uk. Retrieved 27 October 2014.
- "662 Squadron Army Air Corps". mod.uk. Retrieved 27 October 2014.
- "663 Squadron Army Air Corps". mod.uk. Retrieved 27 October 2014.
- "654 Squadron's Last Parade Before Disbandment". Forces TV.
- "656 Squadron Army Air Corps". mod.uk. Retrieved 27 October 2014.
- "664 Squadron Army Air Corps". mod.uk. Retrieved 27 October 2014.
- "668 Squadron Army Air Corps". mod.uk. Retrieved 27 October 2014.
- "673 Squadron Army Air Corps". mod.uk. Retrieved 27 October 2014.
- Apache AH Mk 1 Archived 19 June 2009 at the Wayback Machine, AgustaWestland.
- "Boeing AH-64 Apache". Jane's: All the World's Aircraft. Jane's Information Group. 13 October 2000. Archived from the original on 16 June 2006. Retrieved 17 June 2006.
- "Wayback Machine" (PDF). 22 October 2007. Archived from the original (PDF) on 22 October 2007.
- "Apache AH Mk1". AgustaWestland. Archived from the original on 3 April 2011. Retrieved 4 June 2011.
- "DSEI: Brimstone goes green for Apache integration". flightglobal.com. 18 September 2015.
- "AH Mk1 Apache". AgustaWestland. Retrieved 30 June 2011.
- Bishop, Chris and Jim Laurier. "Apache AH-64 Boeing (McDonnell Douglas) 1976–2005". Osprey Publishing, 2005. ISBN 1-84176-816-2.
- Finch, Roger S. "Helicopter Certification: The Challenge of Testing UK Apache".[permanent dead link] Boscombe Down: Defence Test & Evaluation Organisation, 1996.
- Heyman, Charles. "The British Army Guide". Barnsley: Pen & Sword Books, 2005. ISBN 1-84415-280-4.
- Hoyle, Craig. "Apaches At Ready – Despite Delays in Training Pilots for the Boeing/Westland Apache AH1, the British Army has no Reservations about its New Attack Helicopter". Flight International, 26 July 2004. pp. 58–60.
- Lewis, Damien. "Apache Dawn", Sphere, 2009. ISBN 978-0-7515-4191-5.
- McGowen, Stanley S. "Helicopters: an illustrated history of their impact". ABC-CLIO, 2005. ISBN 1-85109-468-7.
- National Audit Office. "Building an Air Manoeuver Capability: The Introduction of the Apache Helicopter". London: The Stationery Office, 28 October 2002.
- King, Anthony. "The Transformation of Europe's Armed Forces: From the Rhine to Afghanistan". Cambridge University Press, 2011. ISBN 0-521-76094-1.
- Macy, Ed. "Hellfire". Harper Collins, 2010. ISBN 0-00-728820-4.
- Madison, Charlotte. "Dressed to Kill", Headline Review, 2010. ISBN 0-7553-1962-1.
- Ryan, Mike. "Battlefield Afghanistan". Spellmount, 2007. ISBN 1-86227-390-1.
- Thornton, Rod. "Asymmetric Warfare: Threat and Response in the Twenty-First Century". Polity, 2005. ISBN 0-7456-3365-X.
|Wikimedia Commons has media related to AH-64 Apache.|
- Apache Mk 1's - Leonardo official website
- Westland Apache AH Mk 1 (WAH-64 Apache Longbow) on Army Air Corps