Grob G 109

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G109/ Vigilant T1
A British-registered G109B.
Role	Motor glider Type of aircraft
Manufacturer	Grob Aircraft
Designer	Burkhart Grob
First flight	14 March 1980
Primary user	Royal Air Force (Retired from service 5 May 2018) Australian Air Force Cadets (Still in service as of 2014)
Number built	476

The Grob G109 is a light aircraft developed by Grob Aircraft AG of Mindelheim Mattsies in Germany. It first flew (G109 prototype, and then production G109A form) in 1980. The G109B followed in 1984. It is a two-seat self-launching motor glider in which the pilot and passenger or student sit side by side, with good visibility provided by large windows.

As well as normal civilian use this aircraft was also used in the Royal Air Force Volunteer Gliding Squadrons (VGS) to train air cadets through the gliding induction, and gliding scholarship courses up until 5 May 2018, when it was retired from service. The Grob 109B was known in RAF service as the Vigilant T1.^[1] The G 109 was the first motor glider built using composite construction to be granted Federal Aviation Administration approval.^[2]