St Davids was used intermittently by the TWU at Brawdy in two ways:
1. It was a last-ditch crash diversion but in my time as an instructor there (75-81) I do not recall it ever being used as such officially. St Athan was our primary crash diversion until Chivenor came back into the fold.re-opened.
2. We flirted with using using it as a base from where to operate the target-towing sorties to free up Brawdy's runway for training sorties. It was trialled but proved logistically impracticable although ATC was easily provided by Brawdy as the main runway could easily be seen from the Brawdy tower. Runway time at Brawdy was at an absolute premium in 75-77 so any option to free up space was welcome. In the end a second TWU was the only option.