Sch 10 para 56
When the documentation process is applied to the maintenance delivery function, at least the following elements must be recorded— (a) clear identification of all facilities, equipment and tools related to activities affecting safety; (b) all maintenance works performed, including personnel, tools, equipment, spare parts and materials used and taking into account— (i) relevant national rules where the organisation is established; (ii) requirements laid down in the maintenance orders, including requirements regarding records; (iii) final testing and decision regarding release to service; (c) the control measures required by maintenance orders and the release to service; (d) the results of calibration and verification, whereby, for computer software used in the monitoring and measurement of specified requirements, the ability of the software to perform the desired task must be confirmed prior to initial use and reconfirmed as necessary; (e) the validity of the previous measuring results when a measuring instrument is found not to conform to requirements.