US Patent 9975642 Fan cowl latch

A nacelle may include fan cowl panels which may be opened to provide access to the fan case. A latching mechanism may latch a left fan cowl panel to a right fan cowl panel. As a handle is opened to unlatch the latching mechanism, the movement of the handle may cause a push pin to create a separation between the left fan cowl panel and the right fan cowl panel. The separation may create a visual indication that the fan cowl panels are not latched together, which may prevent an aircraft from inadvertently taking off with unlatched fan cowl panels. The push pin when extended may prevent closure of the fan cowl panels.