Just had a wee look around, it was VQ-1's PR-21, bureau number 135749, c/n 4316 and call sign Deep Sea 129, that was downed on the Tuesday 15th of April 1969, at 07:00 local time....
An interesting subject that I just decided I had to have!
Another interesting subject when the US Navy thought primary training could BEGIN on a jet. A short lived experiment, through no fault of it's own, when the few built where released to the civilian market they really showed what they could do.