9/11 repeat?

You can watch the output of BBC World from about 10 minutes before the first crash right up to the evening of the 13th of September 2001 here (along with NBC, ABC, CBS, Fox and CNN):
http://www.archive.org/details/sept_11_tv_archive#September11

Of course the tapes of BBC World's output from that day were lost for a while due to them being put back onto the wrong shelf. I've no idea if any of News 24's output from 9/11 exists

Yeah I've seen the World output - not very good (especially when the 2nd plane hit going mostly unnoticed!). From what I can remember the proper News 24 output was much better.