Quote from Doors to Automatic:
"Note the time taken for the aircraft to pass between the 1000ft and 500ft markers at the far end."
Think I can see the 1000ft (time about 0:22), but the 500ft would be guesswork... (~ 0:24?).
It'll be interesting to see what the BEA have to say when they emerge from the Xmas break. Presumably they will send a team, and be responsible for the DFDR/CVR retrieval - in the event they haven't already been nicked or tampered with... (The QAR cassette would also be invaluable, but that's even less likely to be unsullied.)