An aircraft passenger accommodation unit for location adjacent to an aisle in an aircraft cabin, the unit comprising: - a seat, - a shell, at least partially surrounding the seat, wherein the shell defines an opening that allows a passenger egress between the aisle and the seat through the opening, and - a door assembly (140, 150, 160, 170, 180), for providing variable access through the opening between the aisle and the seat, wherein the door assembly (140, 150, 160, 170, 180) comprises: - a door slidable with respect to the shell between a retracted position, in which the door is at least partially overlapping with the shell to provide access to the opening, and an extended position, in which the door is at least partially non-overlapping with the shell to at least partially close off access to the opening, - a slide track attached to the shell, - a slide runner (151, 152) for sliding along the slide track, and - a connection mechanism (181, 182) for selectively connecting the door to the slide runner (151, 152), wherein the door has two sliding modes: i) a first sliding mode in which the connection mechanism (181, 182) connects the door to the slide runner (151, 152) and wherein the slide runner (151, 152) slides along the slide track, and ii) a second sliding mode in which the connection mechanism (181, 182) does not connect the door to the slide runner (151, 152) and wherein the door slides in relation to the slide track; characterised in that the door assembly (140, 150, 160, 170, 180) is provided with a release biasing member that urges the door away from the slide runner (151, 152). - a seat, - a shell, at least partially surrounding the seat, wherein the shell defines an opening that allows a passenger egress between the aisle and the seat through the opening, and - a door assembly (140, 150, 160, 170, 180), for providing variable access through the opening between the aisle and the seat, wherein the door assembly (140, 150, 160, 170, 180) comprises: - a door slidable with respect to the shell between a retracted position, in which the door is at least partially overlapping with the shell to provide access to the opening, and an extended position, in which the door is at least partially non-overlapping with the shell to at least partially close off access to the opening, - a slide track attached to the shell, - a slide runner (151, 152) for sliding along the slide track, and - a connection mechanism (181, 182) for selectively connecting the door to the slide runner (151, 152), - a door slidable with respect to the shell between a retracted position, in which the door is at least partially overlapping with the shell to provide access to the opening, and an extended position, in which the door is at least partially non-overlapping with the shell to at least partially close off access to the opening, - a slide track attached to the shell, - a slide runner (151, 152) for sliding along the slide track, and - a connection mechanism (181, 182) for selectively connecting the door to the slide runner (151, 152), wherein the door has two sliding modes: i) a first sliding mode in which the connection mechanism (181, 182) connects the door to the slide runner (151, 152) and wherein the slide runner (151, 152) slides along the slide track, and ii) a second sliding mode in which the connection mechanism (181, 182) does not connect the door to the slide runner (151, 152) and wherein the door slides in relation to the slide track; i) a first sliding mode in which the connection mechanism (181, 182) connects the door to the slide runner (151, 152) and wherein the slide runner (151, 152) slides along the slide track, and ii) a second sliding mode in which the connection mechanism (181, 182) does not connect the door to the slide runner (151, 152) and wherein the door slides in relation to the slide track; characterised in that the door assembly (140, 150, 160, 170, 180) is provided with a release biasing member that urges the door away from the slide runner (151, 152).