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 is now also used in Volunteer Gliding Squadrons(VGS) by the Royal Air Force to train Air Cadets through the Gliding Induction and Gliding Scholarship courses. The Grob 109B is known in RAF service as the Vigilant T1. The G 109 was the first motor glider built using composite construction to be granted Federal Aviation Administration approval.