page_title: AgustaWestland AW101
section_title: Royal Air Force
hierarchical_section_title: AgustaWestland AW101 / Operational history / Royal Air Force
caption_attribution_description: English: Elwood H.L.S. ( Heliport ) Barrasford RAF Merlin Mk3a Training Sorte
context_page_description: The AgustaWestland AW101 is a medium-lift helicopter used in both military and civil applications. First flown in 1987, it was developed by a joint venture between Westland Helicopters in the United Kingdom and Agusta in Italy in response to national requirements for a modern naval utility helicopter. Several operators, including the armed forces of Britain, Denmark, and Portugal, use the name Merlin for their AW101 aircraft. It is manufactured at factories in Yeovil, England and Vergiate, Italy; licensed assembly work has also taken place in Japan and the United States.
  Prior to 2007, the aircraft had been marketed under the designation EH101. The original designation was, in fact, EHI 01, from the name given to the Anglo-Italian joint venture – European Helicopter Industries – but a transcription error changed this to EH101 and the designation stuck. In 2000, Westland Helicopters and Agusta merged to form AgustaWestland, leading to the type's current designation.
context_section_description: The RAF ordered 22 Merlin HC3 for transport missions, the first of which entered service in January 2001 with No. 28 Squadron RAF based at RAF Benson. The type is equipped with extended-range fuel tanks and is capable of air-to-air refuelling. The Merlin is frequently utilised for troop transport duties and for the transport of bulky objects, either internally or underslung, including vehicles and artillery. The Merlin Depth Maintenance Facility at RNAS Culdrose performed most tasks upon the Merlin HC3.
  The Merlin's first operational deployment was to the Balkans region in 2003. RAF Merlins were first deployed to Iraq as part of Operation Telic in 2004, supporting coalition forces and were operated as the main medevac asset in southern Iraq; both Flight Lieutenant Kev Harris and Flight Lieutenant Michelle Goodman were awarded the DFC during this period. Merlins routinely operated around Basra until Britain's withdrawal in June 2009.
  In 2002, Westland made an unsuccessful unsolicited offer to the British Ministry of Defence, proposing an enhanced Merlin variant intended to satisfy the demand for additional lift capacity. An alternative measure was the acquisition of six AW101s from Denmark in 2007; designated Merlin HC3A, these were assigned to the RAF, allowing Merlins to be deployed in Afghanistan. The HC3A is used for training and not for frontline operations due to various configuration differences. In December 2007, a second Merlin squadron, No. 78 Squadron was formed at RAF Benson.
  In 2009, five Merlin Mk3s were operating in Afghanistan, transporting troops and supplies. The deployment to Afghanistan was criticised as the aircraft reportedly lacked protective Kevlar armour. By July 2010, the Merlin fleet was fully fitted with ballistic armour. The deployment of Merlins to Afghanistan allowed the detachment of Sea Kings to be withdrawn from the region in October 2011. As part of the UK drawdown in Afghanistan, Merlins were withdrawn from theatre in June 2013.
  In 2012, the RAF's Merlin HC3/3A fleet began to be transferred to the Royal Navy for use by the Commando Helicopter Force. Royal Navy personnel worked alongside RAF crew at Benson to build experience during the transition. The £454m Merlin Life Sustainment Programme resulted in 25 HC3/3A airframes being fitted with the cockpit electronics of the HM2, folding tails and main rotor heads, strengthened landing gear, deck lashing mounting points, obsolescence updates, fast-roping points and a common emergency egress system. The first HC4 is to begin flight trials in September 2017, with an IOC in mid-2018; an interim folding main rotor head will be fitted to some HC3 for shipborne operations prior to the HC4 upgrade. Command of the UK Merlin HC3/3A fleet was formally transferred from the RAF to the Royal Navy during a ceremony at RAF Benson on 30 September 2014.  As part of the same ceremony, the RAF's 78 Sqn was disbanded and the Royal Navy's 846 Naval Air Squadron stood-up with the Merlin. The RAF's 28(AC) continued to operate as part of the Commando Helicopter Force until July 2015, when 28(AC) Sqn stood down and 845 Naval Air Squadron stood-up. 846 NAS relocated from RAF Benson to RNAS Yeovilton in March 2015, with 845 NAS following in June 2016.
caption: RAF Merlin HC3A, 2008
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