The Slingsby T.67 Firefly is a two-seat civil and military primary trainer. The Slingsby Firefly is a
development of the Fournier RF-6B further developed by Slingsby Engineering Ltd. Production by
Slingsby started with nine T.67As, which were basically licence built RF-6B-120s. The first Slingsby T.67A,
G-BIOW c/n 1988, flew first in 1981. After re-development of the airplane with maximal use of glass fibre
reinforced plastics the T.67B entered production, being the first UK-certified composite aircraft. The
prototype of the T.67B, G-BUIZ c/n 1998, was flown first on 16 April 1981, and served as a development
machine. A 116 hp Textron Lycoming O-235-N2A engine powers the T.67B. Further development of the
aircraft resulted in the Slingsby T.67C Firefly. The T.67C is similar to the T.67B except for its more powerful
120kW (160hp) Textron Lycoming O-320 engine. The T-67C-3 as used by the KLS has wing tanks and a three-piece
canopy. Next to the T.67C a military version, the T.67M was introduced. The first T.67M Firefly, G-BKAM c/n 1999,
flew on 5 December 1982. 112 Slingby T.67M-260s were delivered as Slingsby T-3A Firefly to the U.S. Air Force's
Air Education and Training Command for use as trainer aircraft to screen pilot candidates. 290 civil and military
T.67s of all models were built.
In 1990, the RLS bought 9 Slingsby T.67C-3 Firefly for the basic training. They replaced the eight Cessna F.152-IIs operating
in this role since 1980. The 1990-built Slingsby T.67C-3 c/n 2101 was tested as G-7-144. On 12 March 1991, the Slingsby T.67C-3 was
registered PH-SGI with Staat der Nederlanden/Ministerie van Verkeer en Waterstaat/Rijksluchtvaartdienst/Directie Rijksluchtvaartschool, Eelde.
When in August 1991, the KLM took over the RLS and transferred it into the KLM Luchtvaartschool: the aircraft were repainted in the basic KLM colours.
On 28 August 1991, the PH-SGI was registered with KLM Luchtvaartschool BV, Eelde. On 29 November 1999, registration PH-SGI was cancelled as exported
to the UK. On 30 November 1999, the Slingsby T.67C-3 Firefly was registered G-BYYG in the UK with B. Dixon, Newcastle upon Tyne. On 7 February 2000,
the G-BYYG was registered with B. Dixon and S.E. Marples. On 17 April 2007, the G-BYYG was registered with The Pathfinder Flying Club at RAF Wyton.
On 29 October 1993, the Slingsby T.67C-3 Firefly PH-SGI was photographed in the KLS colours.