 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.