The Robinson R44 Raven I is a single-engined light utility helicopter for up to 1 crew and 3 passengers, powered by a carburetted Lycoming
O-540-F1B5 piston engine. The Robinson R44 is built and developed by the Robinson Helicopter Company in Torrance, California.
Design of the Model R44 began in 1985. The first prototype flew on 31 March 1990 and the second
in January 1991. Sales efforts got under way in March 1992 at a base price of 235.000 US-Dollars.
FAA Type Certification for the R44 Astro was achieved on 10 December 1992, and the first Robinson R44 Astro
was delivered in February 1993. In 2000, the R44 Astro was replaced as the main production model by the hydraulically-assisted
R44 Raven. The development from the first R44 Astro in 1993, via the R44 Raven I to
the first R44 Raven II delivered in 2002, has been remarkable. For the
pilot the most important difference is the conversion from a carbureted
engine on the Astro to injection and hydraulic controls on the Raven II.
Over 6500 of the four-seat Model R44s are delivered to customers all
over the world. The ICAO Aircraft Type Designator for the R44 Raven helicopter is R44.
In 2000, the Robinson R44 Raven s/n 0852 was registered YR-REA in Romania with Becker Aviation Trans. On 25 November 2013,
the helicoptrer was registered D-HHAG in Germany by a privat owner/operator and based at Egelsbach Airfield. On 1 November 2014,
ONETWO Aviation at Hamburg/Fuhlsbüttel - Helmut Schmidt Int'l Airport, became the operator of the D-HHAG. In 2016, the D-HHAG
returned to its owner at Egelsbach due to the bankruptcy of ONETWO Aviation. In 2023, Robinson R44 Raven D-HHAG entered service with
CoelnCopter at Bonn/Hangelar Airport. The 2002-built Robinson R44 Raven D-HHAG was seen at Flugplatz Bonn-Hangelar on 14 May 2023.