See other failures under 000.html.
Crank failure.
Truvative Stylo Team right crank. From http://www.flickr.com/photos/48262653@N00/339731733/in/set-72157594449980969/ as of 2008/01/18.
![[X]](truvativ-stylo-team.jpg)
Service history is unknown. From another picture in the sequence (http://www.flickr.com/photos/48262653@N00/1427498609/in/set-72157594449980969/), rider is 100kgf and crank was ridden regularly airborne ("[after the third frame failure] I gave up on trying to perfect my tail whip... and haven't had any failures since.").
See also FAIL-072.html.