The invention concerns a device for indicating incorrect closure of locking means consisting of a plurality of locking mechanisms located between two fan cowlings of an aircraft engine nacelle, the device including a body able to adopt, relative to the cowlings, a retracted position as well as a protruding position providing a warning of incorrect closure. The spinning assembly is placed within a recess in the forefoot region of the sole member. The marker in some embodiments can be rendered as a geometric shape in the IC design layout. The agent further comprises, in one embodiment, extraction logic for extracting information resulting from of the agent’s access to the data resource specified by the connector, and communication logic to communicate a result to the user or to another agent for further use. Each of the conveyors may include a mesh belt that permits the flocculent to flow through the conveyor. Further, when the asynchronous first-in-first-out cell of the present invention is applied to the interface circuit of a dual-supply-voltage 16-point radix-22 GALS-based FFT architecture, considerable power saving and latency reduction can be achieved.