sister aircraft that were sent to Dunsfold Aerodrome in Surrey, and a third which was sent to Cotswold Airport in Gloucestershire. Current units Current flying and notable non-flying units based at MOD St Athan. Royal Air Force No. 22 Group (Training) RAF The Defence College of Technical Training (DCTT) Defence School of Electronic and Mechanical Engineering (DSEME) No. 4 School of Technical Training No. 6 Flying Training School Universities of Wales Air Squadron – Grob Tutor T1 (operates from adjacent Bro Tathan airfield) No. 634 Volunteer Gliding Squadron No. 2300 (St Athan) Squadron (Air Training Corps) Strategic Command Directorate of Special Forces Special Forces Support Group Future Relocation of No. 4 School of Technical Training There was an intention to move No 4. School of Technical Training (No. 4 SoTT) from St Athan to MoD Lyneham as the Army (REME) schools that are relocating there carry out similar engineering training functions; however a decision by 22 Training Group to keep the CAP badges together (RAF with RAF) seems to have changed the direction of No. 4 SoTT, with it now potentially moving to RAF Cosford to rationalise the Defence College of Technical Training (DCTT) training establishments, a move confirmed in an announcement by Defence Secretary Michael Fallon on 15 September 2015. In October 2017, the Ministry of Defence (MOD) stated the plans to move No. 4 SoTT were not sufficiently mature to provide a date for the move. The MOD indicated in September 2019 that the intent remains to relocate the school before the lease on its buildings expires in March 2024. The future location and time-frame to relocate the school was yet to be finalised. Air accidents On 26 August 1993 an ATC civilian instructor was seriously injured and the RAF Volunteer Reserve pilot, Group Captain Roger Sweatman, was killed when their Chipmunk trainer, on an air experience flight, crashed after encountering difficulties during a simulated emergency low-height manoeuvre on take-off. The pilot attempted to recover the aircraft in a reciprocal approach; however, it struck the roof of the engine repair and overhaul squadron hangar and crashed to the ground at the foot of the adjacent hangar. The accident was investigated by an air crash investigation team and was attributed to pilot error. Just before 1100 GMT on 11 February 2009, two Grob Tutor aircraft flying out of St Athan were involved in a mid-air collision in which two