Is it true that according to the fight data recorder from flight 77(pentagon) the cockpit door wasn't opened?

gromit8012009-12-03T15:58:52Z

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Hate to blow your conspiracy bubble, but the data recorders of that time, did not record the opening and closing of cockpit doors on any aircraft anywhere.

MadMan2009-12-03T16:48:16Z

Flight data recorder does not show whether the cockpit door is open or not.

iansand2009-12-03T19:14:32Z

You are right. The flight data recorder does not show the door opening, mainly because it does not record that stuff.