<p>The device (6) has a sensor for measuring an operation parameter of an aeronautical equipment (4), where the device is automatically activated only in the presence of parameter representing the operation of the equipment, in the absence of electric/electronic connection with outside of the device. A memory stores values of the parameter measured by the sensor. An electric energy source possesses adequate capacity to operate the device. A support has a metallic surface, and a visible metallic part to receive an identification plate of the equipment. The energy source is a thermo-generator or a piezoelectric generator. The operation parameter of the aeronautical equipment is temperature and/or vibration.</p>
