[missthethunder]

Why would they lock the cockpit door
when the plane was empty and parked?

[LukeL]

Because you can start a jet from the control panel. I doubt they drain the fuel if the plane is only going to be idle for a couple of days or less.

[MayflowerMadam]

“Why would they lock the cockpit door
when the plane was empty and parked?”

I’ve read that terrorists have embedded sleepers in airport jobs, probably including aircraft maintenance. There’s no telling what things could’ve been messed with, or planted, by janitorial crews.

[bgill]

You want to be on a plane that had the cockpit left open for anyone to come in and tinker with a knob or two?