A passenger seat for an aircraft has a fixed seat portion with a front facing toward a first direction of the aircraft. The fixed seat portion has a centerline spaced equally from opposed lateral sides of the fixed seat portion. A first engagement member extends upwardly from the front at the centerline to a first engagement end. A moveable seat portion is mounted onto the fixed seat portion and is displaceable relative thereto. The moveable seat portion has a second engagement member extending downwardly from a front of the moveable seat portion to a second engagement end. The second engagement member is displaceable with the moveable seat portion to position the second engagement end under the first engagement end in an engagement position such that the overlapping first and second engagement ends prevent the moveable seat portion from pitching in a second direction opposite to the first direction.