I was groundcrew on 3F at the time 1990 or 91. If I recall correctly it was late afternoon and we’d been waiting for authority to drop a 1000lb inert off the the centreline from a GR5. It finally came through and a pair took off in a downpour (to be accurate one did, the other ended up in the Ems) for the range.
I won’t comment on the reasons as I’m sure it’s recorded more accurately than I can remember but I do recall the pilots name and he did get out safely.