Flight deck security pocket door decompression venting and crew escape system

A door assembly, comprising:

• a door panel having a first pair of bearings secured to and positioned spaced apart along a top portion of the door panel and a second pair of bearings secured to and positioned spaced apart along a bottom portion of the door panel;
• a wall having an opening which extends through the wall wherein:
• a first rail track extends along a first end portion of the opening with a first opening defined by the first rail track positioned on a first side of the first rail track, such that with the first pair of bearings aligned with the first rail track and the door panel in a closed position relative to the opening a first bearing of the first pair of bearings is aligned with the first opening;
• and
• second rail track extends along a second end portion of the opening with a second opening defined by the second rail track positioned on a first side of the second rail track, such that with the second pair of bearings aligned with the second rail track and the door panel in a closed position relative to the opening a first bearing of the second pair of bearings is aligned with the second opening;
• and
• at least one hinge blocking assembly comprises a first bracket connected to the wall and a second bracket wherein the second bracket is rotatably mounted to the first bracket about a fixed axis of rotation defined by the at least one hinge blocking assembly wherein with the second bracket in a first position the second bracket extends away from the first bracket.