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| Eurocopter AS365 | |
|---|---|
| Name | AS365 |
| Type | Medium twin-engined helicopter |
| Manufacturer | Aérospatiale; Eurocopter; Airbus Helicopters |
| First flight | 1975 |
| Introduced | 1975 |
| Status | In service |
Eurocopter AS365 is a twin‑engined, medium‑weight helicopter developed in France and produced by Aérospatiale and later by Eurocopter and Airbus Helicopters. The type entered service during the Cold War era and has been operated worldwide by civil, law enforcement, and military organizations. Noted for its four‑blade main rotor and fenestron tail, the helicopter has been adapted for search and rescue, offshore transport, and utility missions.
The AS365 originated from the Aérospatiale SA 365 Dauphin family developed by Aérospatiale and later produced under Eurocopter and Airbus Helicopters. Initial development was driven by requirements from French Navy, Société Nationale Industrielle Aérospatiale, and export customers including Royal Navy and United States Coast Guard affiliates; early work drew on technologies proven in the SA 360 and Aérospatiale Alouette III. Design features included a composite four‑blade main rotor derived from research at ONERA, a fenestron anti‑torque tail introduced by Aérospatiale on earlier types, and twin Turbomeca/Turbomeca‑derived turboshaft engines influenced by engines used on Super Frelon projects. Avionics and systems integration referenced standards from Eurocontrol and leveraged navigation suites compatible with ICAO and NATO operational procedures. Structural design employed fatigue‑tested airframe techniques developed in collaboration with CNES and industrial partners in the Pays de la Loire region. Performance goals balanced payload, endurance, and shipboard compatibility to meet requirements similar to those of Sikorsky and Bell Helicopter competitors in international procurement programs.
Operational deployments include roles with French Navy search and rescue units, Royal Air Force support squadrons, and civil offshore services contracted by BP and Shell. The type served in maritime patrol and casualty evacuation with units tied to European Union crisis response operations and supported humanitarian relief following events like Hurricane Katrina and the 2004 Indian Ocean earthquake and tsunami via civil operators contracted by United Nations agencies. Military variants operated in support of NATO exercises and bilateral missions with partner states such as Germany and Spain. Civil law enforcement and air ambulance services in countries like United Kingdom, Australia, and Brazil used the design for urban operations, coordinated with agencies such as National Health Service air ambulance programs and municipal police forces. Offshore transport operators flew routes servicing platforms owned by Statoil and Petrobras, where the aircraft demonstrated long‑range capability in conjunction with Helideck safety standards.
Multiple production and upgrade versions were created to fulfill diverse missions. Certified variants included maritime search and rescue configurations used by French Navy and Spanish Navy units, offshore transport models employed by commercial operators such as Bristow Helicopters and CHC Helikopter Service, and military transport adaptations for armed forces including Brazilian Navy and Royal Australian Navy. Specialized versions incorporated anti‑submarine warfare sensors compatible with equipment from Thales and Furuno, air ambulance interiors specified by healthcare providers like St John Ambulance, and law enforcement packages fielded by municipal agencies in United States and Canada. Modernization programs retrofitted glass cockpits with avionics from suppliers including Honeywell and Rockwell Collins, and upgraded engines were supplied by Safran and Rolls‑Royce collaborators for improved hot‑and‑high performance.
Operators spanned national navies, air arms, and civilian firms. Military operators included units from France, Brazil, Australia, Spain, and South Africa, while civilian and commercial operators included Bristow Helicopters, CHC Helicopter, NHV, and various health service trusts in United Kingdom and emergency medical services in Germany. Offshore energy companies such as BP and Royal Dutch Shell contracted flights for platform support, and law enforcement agencies in cities like New York City and São Paulo used variants for public safety missions. International organizations including United Nations peacekeeping logistics and European Commission civil protection operations occasionally chartered the helicopter for specialized deployments.
Typical medium twin configuration included twin turboshaft engines, four‑blade main rotor, fenestron tail, and seating for crew plus up to 11 passengers depending on interior fit. Performance metrics were competitive with contemporaries from Sikorsky and Bell Helicopter product lines, offering cruise speeds adequate for offshore transit and SAR endurance aligned with ICAO recommendations. Avionics suites and rescue equipment were compatible with maritime standards promulgated by IMO and integrated with navigation aids from Eurocontrol partners.
The type experienced incidents during peacetime operations, including offshore accidents during service to companies such as Petrobras and service incidents logged by national aviation authorities like DGAC and FAA. Investigations involved agencies such as BEA and AAIB where applicable, and findings prompted airworthiness directives and fleet modifications coordinated with EASA and manufacturer support units at facilities in Marignane and regional service centers.
Category:Helicopters