The Schweizer 269D Model 333 is a four-seat light utility helicopter powered by a single derated 420hp Rolls-Royce 250-C20W turboshaft engine.
The Model 333 is an evolution of the earlier Model 330SP design featuring modifications to the main rotor sytem. The basic of the Schweizer
269D Model 333 goes back to the Hughes 269 helicopter. The first of two prototypes of the two-seat Hughes Model 269 helicopter
flew first in October 1956, only 13 months after commencement of design work. The basic design sparked US Army interest to order 5,
designated YHO-2-HU, for evaluation. As a result Hughes won a US Army contract for a light helicopter primary trainer and 792 were
built as the TH55A Osage. Deliveries of the commercial Model 269A, designated Hughes 200,
started in 1961. The three-seat Model 269B, designated Hughes 300, flew
first in 1964. In 1969, the 300 was followed by the improved Model 269C,
designated Hughes 300C. Since 1983 Schweizer has built the 269C/300C,
initially under licence for Hughes. Schweizer Aircraft Corp. acquired
all rights to the helicopter in 1986. To join in the 1990 U.S.Army NTH
competition for the TH-55 replacement, Schweizer Aircraft Co. developed
the 269D out of the 269 basic design. The 269D uses the 269 airframe,
has an enlarged cabin and is powered by an Allison 250 turboshaft
engine. Schweizer markets the 269D as Model 330. An evolutionary
development with upgraded dynamic systems components, new-technology
rotor blades with cambered airfoil and larger diameter is the Model 333.
The Schweizer 333 is featuring more gross weight, more useful load, more speed and more hover performance.
On 28 September 2000, Schweizer achieved FAA-certification for the Model 333. In 2005, Schweizer Aircraft Corp. became a
wholly owned Sikorsky Aircraft Corp. subsidiary. In 2009, Sikorsky Aircraft announced the creation of Sikorsky Global Helicopters, a
business unit made up of the manufacturer’s commercial products, including the S-76, S-92 and H-92 platforms, as well as the Schweizer
helicopter line. As part of the rebranding of the commercial products, the S-300C, S-300CBi, S-333 and S-434 helicopters will no
longer retain the Schweizer name. Schweizer Model 333 helicopters manufactured after February 2009, will be known as Sikorsky S-333
helicopters. For a while, it appeared that the acquisition would revitalize the series. Instead, the S-333 more
or less dropped off the map, particularly after Sikorsky moved the production of the S-333 from the original Schweizer
manufacturing plant in Elmira, N.Y. to a S-333 production line at Sikorsky’s facilities in Coatesville, Pennsylvania,
also home to the company’s S-92 and S-76 production lines. In 2014, Cherokee Nation Industries was provided the frame assembly for the S-333 cockpit,
as well as manufacturing the aircraft’s full instrument panel. Once completed, the units were integrated into final assembly at Sikorsky.
By the end of 2014, Sikorsky stopped taking orders for either the S300 or S333
and after the single-engine productionline was closed, final assembly was outsourced to Summit Aviation. The S-434 production line was officially
closed after the Saudi Ministry of Defense bought and then returned several of the four-bladed turboshaft helicopters because they were wearing out
before the end of their estimated service lives. On 6 November 2015, Lockheed Martin completed its $9 billion acquisition of Sikorsky Aircraft,
replacing United Technologies as the American helicopter maker’s parent company.
In May 1999, Schweizer 269D Model 330SP c/n 0027 was flown first with the Schweizer Aircraft Corp. test-registration N41S.
The helicopter was registered VT-DKO in India where it was operated with Deccan Aviation, Bangalore. On 13 July 2009,
registration VT-DKO was cancelled. At that time the helicopter was registered as a Schweizer 330 owned by ADI Chunchangiri Hospital
Trust, Bangalore. On 12 August 2009, the helicopter was registered N421BN in the USA as a Schweizer 269D-A with Aircraft Guaranty Corp
Trustee, Texas, as owner. A trust is an Anglo-Saxon legal. The AGC Trustee's are “Insured fiduciaries". Legally there is no owner, but
the Trustee became the owner. This construction is often used for enabling non-US Citizens to obtain "N” registration of aircraft
with the U.S. Federal Aviation Administration (FAA) for aircraft operating principally outside the United States. On 21 January 2010,
the helicopter was re-registered N707GP with Aircraft Guaranty Corp Trustee, Texas, as owner. The same year the helicopter was upgraded
to a Model 333 with new blades. In September 2012, the in Italy based helicopter was offered for sale by Elialpi Helicopters Service as
a Schweizer 269D Model 333. On 22 December 2015, registration N707GP was cancelled as exported to the UK and on 4 January 2016, the
Schweizer 269D Model 333 was registered G-CIXC in the UK with Elialpi Helicopters Service SRL, Italy. In July 2016, the helicopter arrived
as N707GP by road at the Heli Holland heliport near Emmen in the Netherlands for heavy maintenance by Heli Holland Technics. On 21 December
2016, the G-CIXC was registered with Agrozah Ltd, Bulgaria, as owner. Schweizer 269D Model 333 G-CIGC was seen at the Heli Holland heliport
near Emmen on 27 September 2016.