A system and method for writing, updating and reading the static and dynamic identification data for an aeronautical appliance, which is secure, of low weight and simple to implement. The system for writing, updating and reading the static and dynamic identification data includes a data collection device for collecting and storing static and dynamic identification data for an aeronautical appliance, the collection device integrated into the aeronautical appliance and coupled to a computing unit of the aeronautical appliance according to a master-slave communication model, the computing unit always being master of the communication with the collection device, and a reading device for remotely reading at least part of the identification data stored on the collection device.