Abstract: The invention relates to an aircraft structure, the aircraft structure comprising a first component and a second component. A fastening device fastens the first component to the second component, wherein the fastening device comprises a clamping member, and a fastening member. The fastening member has a longitudinal axis, and the clamping member is associated with the first component such that the clamping member is movable in a first direction and is fixed in position in a second direction, the first direction being parallel to the longitudinal axis of the fastener, wherein the fastener extends through the second component into engagement with the clamping member and holds the clamping member against the second component. The fastening device may hold the first component and second component in a fixed position relative to one another, in at least one direction, without applying a clamping force between the first component and second component.

Abstract: A clack valve assembly comprising: a valve seat comprising an opening; a bearing comprising a recess with a base, a mouth, and a pair of side walls between the base and the mouth; a lid comprising a lid plate and a shaft, the shaft being received in the recess of the bearing; and a shaft retaining member which closes the mouth of the recess in the bearing, thus retaining the shaft within the recess. The shaft and the lid plate are integrally formed elements of a single part. The shaft can rotate within the recess to enable the lid to rotate from a closed position in which the lid engages the valve seat and covers the opening, to an open position in which the lid lifts away from the valve seat enabling fluid to flow through the opening in the valve seat.

Abstract: The invention relates to an aircraft structure, the aircraft structure comprising a first component and a second component. A fastening device fastens the first component to the second component, wherein the fastening device comprises a clamping member, and a fastening member. The fastening member has a longitudinal axis, and the clamping member is associated with the first component such that the clamping member is movable in a first direction and is fixed in position in a second direction, the first direction being parallel to the longitudinal axis of the fastener, wherein the fastener extends through the second component into engagement with the clamping member and holds the clamping member against the second component. The fastening device may hold the first component and second component in a fixed position relative to one another, in at least one direction, without applying a clamping force between the first component and second component.