A privacy door assembly for installation in an aircraft, which aircraft has a flight deck separated from a cabin by a flight deck door, the privacy door assembly being installable between the flight deck door and the cabin, the privacy door assembly comprising: - a door frame comprising a first post and a second post, wherein the second post comprises a latch recess; - a privacy door rotatably coupleable to the first post via a set of hinges, wherein the privacy door comprises - a decompression latch arranged to engage the latch recess when the privacy door is in the closed position within the door frame, and wherein, - the decompression latch is configured to disengage from the latch recess in response to a decompression detected on a forward, side of the privacy door, - wherein the door frame comprises a connector for coupling the door frame to an adjacent structure of the aircraft, wherein the connector, when coupled to the adjacent structure of the aircraft, provides at least one degree of freedom of movement for the door frame with respect to the adjacent structure, - wherein the privacy door comprises a slam latch positioned to engage a slot in the first post of the door frame when the privacy door is in the open position and when the slam latch is in a first position, wherein the slam latch is coupled to a lever positioned on a forward side of the privacy door, and wherein the lever is operable to move the slam latch away from the first post to a second position so as to disengage the slam latch from the slot, - wherein the privacy door further comprises a slam latch spring positioned to bias the slam latch toward the first post, wherein the first post comprises a cylindrical striker, and wherein the cylindrical striker comprises the slot. - a door frame comprising a first post and a second post, wherein the second post comprises a latch recess; - a privacy door rotatably coupleable to the first post via a set of hinges, wherein the privacy door comprises - a decompression latch arranged to engage the latch recess when the privacy door is in the closed position within the door frame, and wherein, - the decompression latch is configured to disengage from the latch recess in response to a decompression detected on a forward, side of the privacy door, - wherein the door frame comprises a connector for coupling the door frame to an adjacent structure of the aircraft, wherein the connector, when coupled to the adjacent structure of the aircraft, provides at least one degree of freedom of movement for the door frame with respect to the adjacent structure, - wherein the privacy door comprises a slam latch positioned to engage a slot in the first post of the door frame when the privacy door is in the open position and when the slam latch is in a first position, wherein the slam latch is coupled to a lever positioned on a forward side of the privacy door, and wherein the lever is operable to move the slam latch away from the first post to a second position so as to disengage the slam latch from the slot, - wherein the privacy door further comprises a slam latch spring positioned to bias the slam latch toward the first post, wherein the first post comprises a cylindrical striker, and wherein the cylindrical striker comprises the slot.