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AS365 N Dauphin II
Eurocopter EC155 B
OO-NHK Airbus Helicopters EC155 B1 Dauphin II c/n 6876 - NHV-Noordzeee Helikopters Vlaanderen - Den Helder Airport in Holland - 5 March 2014 Den Helder-de Kooy (EHKD)

The Airbus Helicopters EC155 B1 is a medium-weight multi-role utility twin engine helicopter accommodating up to 12 passengers and 2 crew. The EC155 B is a development of the AS 365N Dauphin II, with 40% larger cabin area, a new five-bladed Spheriflex main rotor with an extremely low vibration level and 'glass cockpit'. The EC155 B1 is powered by a pair of Turbomeca Arrius 2C2 turbine engines. The new generation of Fenestron tail rotor takes part in the decrease in external noise level. This tail rotor has 10 blades spaced irregularly around the hub. Development of the EC-155, initially known as AS-365N-4 Dauphin started in September 1996. The development of the AS365 N4 wide body helicopter was announced at International Paris Airshow in June 1997. A mockup of the N4 was shown at the International Paris Air Show at Le Bourget and on 17 June 1997, the prototype EC155, F-WDFK, a rebuilt Dauphin, flew first at Marignane. The first pre-poduction EC155 B flew on 11 March 1998. The French Civil Aviation Authority (DGAC) and the German Government Agencies (LBA) certification was awarded in December 1998 and the EC 155 got its single-pilot IFR certificate on 25 January 2000. The first three Eurocopter EC 155 Bs were officially handed over to the German Federal Ministry of the Interior / Bundesgrenzschutz (BGS) at the Bonn-Hangelaar base of the BGS on 16 March 1999. The EC155 B1 is a development of the EC155 B with more powerful engines and improved performance at high altitude and in hot temperature conditions. Deliveries of the EC 155B1 version began in September 2002. More than 170 EC155s have been sold. The ICAO Aircraft Type Designator for the EC155 helicopters is EC55. Since March 2015, Airbus Helicopters uses “H155” as marketing designation for EC155 helicopters.

As a result of the merger between the Eurocopter parents Aérospatiale-Matra; DaimlerChrysler Aerospace (DASA) and Construcciones Aeronàuticas Sociedad Anonima (CASA) in July 2000, the Eurocopter group became a division of the new formed EADS (European Aeronautic Defence and Space company). Taking off into 2014, EADS was rebranded as "Airbus Group". Uniting all its activities under a single brand, its helicopter division Eurocopter was rebranded as Airbus Helicopters on 8 January 2014.

Eurocopter EC155 B1 s/n 6876 was originally ordered by Heli Holland Offshore, to be delivered in October 2009. Per 25 September 2009, Heli Holland Holding acquired 100% of the shares of Heli Holland Offshore. Part of the buy-out of the joint-venture partner was the sale of Eurocopter EC155 B1 s/n 6876 to Noordzee Helikopters Vlaanderen (NHV). Heli Holland Offshore continued its operations with Eurocopter EC155B1 PH-EQU out of Den Helder and Amsterdam. On 29 October 2009, the Airbus Helicopters EC155 B1 s/n 6876 was registered OO-NHK with NHV - Noordzee Helikopters Vlaanderen, Ostend, Belgium, as operator and KBC Lease Belgium as owner. The next day, the 2009-built Dauphin II OO-NHK arrived on delivery at Ostend. Eurocopter EC155 B1 OO-NHK was operated first by NHV on offshore flights to the gas- and oil fields in the British sector of the North Seaout of Norwich, UK. When seen on 5 March 2014, Dauphin II OO-NHK was operated by NHV out of Den Helder-De Kooy on offshore flights to the gas- and oil fields in the Dutch sector of the North Sea.

page last updated: 10-03-2014
Copyright © Jack Wolbrink, Emmen, the Netherlands

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