 On Tuesday 3 March 2020, the UK disabled flying Charity Aerobility announced that they had acquired the RAF Vigilant T1 hulls and would re-engine some with Rotax 912is3 engines and retrofit the latest Garmin glass cockpits.The new aircraft will be known as the Grob 109 Able.The first two prototype aircraft (constructor's serial numbers 6001 and 6010) were designated G 109.