Hi Stig. It may have no connection but the RAF repair / maintenance facility at Burtonwood ( USAAF Base Air Depot 1) was officially known as "BRD site" (Burtonwood Repair Depot). Maybe just a coincidence.
Abingdon was home to no.10 OTU, I don't think there were any repair units there.
Regards
Nick
https://www.historicaviationmilitary.com/BRDsite.html