Latches are a highly critical component of any aircraft. For instance, when an aircraft is at cruising altitude, doors and other openings must be sealed and totally secure. Beyond this, latches have many different types and applications throughout an aircraft, appearing in the radome, engine nacelle, auxiliary power unit doors, and more. There are four main manufacturers that produce five main types of latches found on aircraft. The major manufacturers are Arconic Fastening Systems, Lisi Aerospace, Hartwell Corporation, and Avibank Manufacturing. The main latches they produce include shear pin latches, shear/tension latches, channel latches, pressure relief latches, and hook latches. This blog will explain each type and provide some insight into their applications.