There have been a lot of speculations about the midair of the 1st of
July 2002 at Ueberlingen (near the Swiss-German frontier) between a
Boeing 757 and a Tupolew 154. Today, the German Federal Bureau of
Aircraft Accidents Investigation has published the final report. This
should provide the facts and put an end to the speculations.

Report:
http://www.bfu-web.de/berichte/02_ax001efr.pdf

Appendixes:
http://www.bfu-web.de/berichte/02_ax001ea1.pdf
http://www.bfu-web.de/berichte/02_ax001ea2.pdf

Stefan