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7.2.2 Acceptable Means of Compliance: The ATC or Engineering Watch logbook may be used as an alternative to a separate recording equipment logbook if appropriate. 7.2.3 Guidance: Where a separate recording equipment logbook is used, it may be advisable to include a brief entry in the ATC or Engineering Watch logbook to note the status or actions concerning the recording equipment with full details being kept in the recording equipment logbook. 7.3 Serviceability and Recording Function Check 7.3.1 A daily check shall be made of the serviceability and recording function of the recording equipment without interrupting the recording of any active communications to intermediate and archive storage devices. Use may be made of devices or facilities incorporated into the recording equipment which perform automatic checks of the recording function. The results of these daily checks shall be recorded in the logbook (991). 7.3.1.1 Acceptable Means of Compliance: The recording function may be checked manually by making test transmissions on each of the communications channels and confirming that the communications have been recorded and can be replayed. NOTE: This check shall be made from the hard drive and without interruption of any ongoing recording activity. If this cannot be achieved, a separate replay from a previously archived recording shall be made at monthly intervals and the result recorded in the log book. 7.3.2 A daily check shall be made of the time and date function of the recording equipment. The results of these checks and any discrepancies shall be recorded in the logbook (992). 7.3.2.1 Guidance: When the recording equipment time and date function is found to be outside acceptable limits, a correction must be made as soon as possible and at an appropriate time which does not affect the recording of any active communications or the archiving process. 7.4 Storage Capacity of Hard Disc Drives (HDD) and Solid State Drives (SSD) 7.4.1 Systems using internal storage devices shall have the capability to archive to external media for investigation purposes and where necessary to achieve the required minimum retention period (2357). 7.4.2 Data shall be transferred to long-term storage or archival media in the proprietary format with minimal human intervention (2358). Data shall be protected from loss or corruption during transfer of data from the HDD/SSD to long-term storage or to removable media (2263). Corrupted or incomplete data may result in the inability to replay archived recordings from removable media. NOTE: The risks associated with data transfer between source and long term storage should be minimised by using techniques such as a 'read after write' check or by incorporating a 'check sum' into the transferred data which is subsequently compared with that computed from the original source data. 7.4.3 Recommendation: Where regular transfer from internal storage to removable archive media takes place the removable archive media should be changed on a regular basis corresponding to ATC or engineering staff duty rosters (996). 7.5 Management of Removable Archive Media 7.5.1 Identification 7.5.1.1 Each item of removable archive media shall each have a unique identity, which shall be used in entries made in the logbook, and shall be shown by the use of an indelible written or printed label firmly attached to the media (993). 7.5.1.2 The records contained on the media shall comply with Article 206 paragraph (4)(c) and Schedule 11 Part B of the Air Navigation Order (994). 7.5.1.3 Guidance: The identity and some of the details required by ANO Schedule 11 Part B may be associated with the media by storing them as a recording on the media in addition to any written or printed information attached to the media. 7.5.2 Lifetime of Removable Archive Media 7.5.2.1 Removable archive media must be replaced before any deterioration results in the loss of recorded data and any impounded recordings still required by either the CAA Transcription Unit or the AAIB must be accurately transferred onto new media if necessary (2264). www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：CAP 670 Air Traffic Services Safety Requirements 2
