Abstract: A vertical intercostal for an aircraft vehicle having a vehicle cabin and an over-monument fairing arranged in a non-flex zone area of the vehicle cabin. The intercostal includes a frame member that includes an upper frame attachment region, a lower frame attachment region, and an intermediate frame attachment region to provide lateral structural support for the over-monument fairing to the airframe of the aircraft.

Abstract: In an example, a fastener for coupling a light-emitting device to a composite panel assembly is described. The fastener includes a fastener head including an anchor portion and a retainer portion. The fastener also includes a plug extending from the anchor portion of the fastener head. The plug includes an axial retention structure configured to axially retain the plug in a bore of a composite panel assembly. The retainer portion extends as a cantilever structure from the anchor portion. The retainer portion is configured to press a light-emitting device toward a light-transmission channel of the composite panel assembly when the plug is axially inserted in the bore of the composite panel assembly.

Abstract: An aircraft drain/fill fitting includes a housing adapted for being fitted into an opening between an aircraft interior and an aircraft exterior. The housing has an interior housing segment fluidly coaxially communicating with an exterior housing segment to define a liquid flow path therethrough, and a heater for applying heat to the interior housing segment. A hollow insert element is positioned in the interior housing segment in heat transfer contact with an inner wall of the interior housing segment. An elongate heat transfer probe is positioned in heat transfer contact with the hollow insert element and extends into the exterior housing segment to reduce the incidence of freezing of liquid in the exterior housing segment.

Abstract: An aircraft drain/fill fitting includes a housing adapted for being fitted into an opening between an aircraft interior and an aircraft exterior. The housing has an interior housing segment fluidly coaxially communicating with an exterior housing segment to define a liquid flow path therethrough, and a heater for applying heat to the interior housing segment. A hollow insert element is positioned in the interior housing segment in heat transfer contact with an inner wall of the interior housing segment. An elongate heat transfer probe is positioned in heat transfer contact with the hollow insert element and extends into the exterior housing segment to reduce the incidence of freezing of liquid in the exterior housing segment.