Flt. Lt. JD (Derek) Walmsley was my Uncle. Unfortunately, as I was 5 at the time of his death I can't provide you with any details from personal knowledge. My understanding is that the RAF did not provide that much information to either of his brothers here in Canada or to his mother (since deceased).
I've always wondered why the pilot was USAF - perhaps just an exchange?
If you were able to find out anything else out about this incident I'd appreciate it if you would let me know.
Thanks,
Sean Walmsley
[email protected]