I remember this day well - we were watching from the QFI's crewroom; it was exercise CP4 - co-pilot's asymmetric training, (when we used to shut down engines for real for practice, how foolish we were). They came in a bit fast and got into a "porpoise" from which the QFI couldn't recover. The fire situation was exacerbated by the then "long grass policy" to keep the birds away, never really worked, and the long dry grass burned merrily. We were amazed when XV181 was rebuilt, and there it is now with the Austrians! I felt so sorry for the instructor, and I believe the Asymmetric training policy may have changed after this, can't really remember.