Surprisingly, the door plug diagram published by NTSB, sourced from Boeing (sic!), shows the two bottom spring rods in a compressed position in a door plug open situation, while the door plug remains flush with the bottom doorframe. In reality, of course, in an open door plug situation the spring rods would be flush with the top of their guide brackets attached to the door plug frame and the door plug itself would be lifted from the bottom doorframe, commensurate with the distance travelled by the spring rods.
