I have a feeling it might be broadcasted under a different title - couldn't find any torrents relating to it or a video on amazon to grab.
in case you haven't already found it, the full title of the documentary was:
Equinox - Near Miss
It was broadcasted on the BBC i think in 1999 in the UK.
I've tried briefly to find the full version on Google video or You tube with no hope, so if you or anybody else reading this manages to find it, please give me a buzz. =]