Abstract: An aircraft monument floor attachment stud may include a body configured to pass through an opening of an aircraft monument, and a head. The body may include a body diameter. The body may be configured to couple to a fitting inserted into a mount point installed within an aircraft cabin floor. The head may include a tool section with a tool section diameter less than the body diameter. The tool section may be configured to receive a predetermined amount of torque from a tool to secure the aircraft monument to the fitting. The head may include a shaped section with an intermediate diameter greater than the tool section diameter and less than the body diameter. The shaped section may include at least one shaped portion with at least one sloped wall, and may be configured to provide a transition between the tool section diameter and the body diameter.

Abstract: An air return duct and air return duct grille for a chiller in an aircraft galley has articulated slats that are biased to open during chilling cycles and close during defrost cycles. In the closed orientation, the articulated slats divert any condensate from the chiller to a collection hose; in the open orientation, the articulated slates allow unrestricted airflow. The articulated slats may include a passive biasing element to bias the articulated slats into an open or closed orientation as necessary. The air return duct may also include air return duct grills without articulated slates to allow unobstructed air flow when the articulated slats are in a closed orientation.

Abstract: A device may include a body, springs, and a plunger. The body may include a back wall and a front wall. The body may have a cavity forming spring channels and at least one rail. The front wall may have an aperture extending into the cavity. Each spring may be implemented in one of the spring channels. The plunger may include a plunger head and a plunger rod extending from the plunger head and through the aperture. The plunger head may be configured to engage the springs. The plunger head may have at least one rail guide channel, each configured to accommodate one rail. When a compressive force is applied to the plunger rod, the plunger head compresses the springs as the plunger head travels in a first direction within the cavity. When the compressive force is reduced, the plunger head travels in a second direction opposite the first direction.