According to the invention, expensive and technical high-quality implements (11a, 11b) of the aeronautical industry which, for certain checks of the airplanes, must be overhauled and/or new calibrated or certified, are provided with a radio frequency transponder (RFT and/or bar code) with or without cryptography (15a, 15b) which contains an individual machine readable identification characteristic of the implement (11a, 11b). The status data of each implement are stored at the manufacturer's under this identification characteristic in a central data bank (13) and can be remote called with a corresponding authorization. Thus, it is possible to carry out the sending of the implements without accompanying documents and to optimize the logistic allotment.