I've now found a book which tells me that the aircraft met it's accident landing on runway 15 at LBA on 6th October 1980: that it was transported by road to EMA 13th February 1981 & was rebuilt using the wings of series 814 G-BAPD which had been withdrawn from use by BMA & was in storage. The book confirms the re regristration to G-BMAT on the date which I quoted in my previous post