controllers are responsible for sending ATS messages (182) d) ICAO Doc 4444 PANS-ATM at units where air traffic controllers are responsible for
sending ATS messages (183) e) ATS Information Notices (ATSINs) applicable to ATC units (184) f) CAA Information Notices (INs) and Safety Notices (SNs) applicable to ATC units
(2381) g) CAP 744, Air Traffic Controllers - Licensing (2037) h) CAP 774 UK Flight Information Services (2259) i) any other document, including safety management system documentation, as
required by the CAA (185). Any document so required will normally be specified in the Approval document (186).
5.2  A method of ensuring that all documents required to be held at an ATC unit are correctly amended shall be established (187).
5.3  Unless otherwise approved by the CAA, the documents required to be available at operational positions shall normally be in conventional printed form (1749).
5.4  The conditions below will normally need to be satisfied in order to obtain CAA approval to keep reference documents, required to be immediately available at operational positions, in electronic form (1750):
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Documents should normally be kept on a computer that is dedicated to the function and not used for other functions.

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The computer should not normally be dependant on the availability of a network (including the internet) for its correct operation or for access to the reference documents.

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Arrangements should be made to ensure that, as far as reasonably practicable, the computer should be available and serviceable at all times that an air traffic service is being provided.

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A serviceable printer should be available to permit extracts to be printed if required.

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The computer and its display should be located in a position that enables reference to be made to documents without interfering with the provision of the air traffic service.

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Documents should be available for viewing/printing within a reasonable period of the user making the request (a period better than or comparable to the time taken to obtain the information from a conventional printed version of the document, for example).

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The computer should comprise hardware and software that is demonstrated to be appropriately reliable.

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Security measures should be implemented to ensure that no unauthorised access to the files or computer configuration is possible.

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Security measures should be implemented to ensure that no unauthorised changes can be made to the content of documents made available on the computer.

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It should be possible for the user readily to establish the identification of any document that is kept on the computer (and, if appropriate, the amendment level).

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Document files should normally be kept on non-volatile, non-removable media (e.g. a local hard drive of the computer being used for the purpose).

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Each document should normally appear to the user as a discrete document, i.e. amendments to the content should be incorporated into the main body rather than available as separate files.

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A method of configuration control should be implemented to ensure that amendments to documents are incorporated as soon as practicable after their effective date.

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A method of access control should be implemented to ensure that only the current version of a document can be accessed.

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Any material that may be required to be viewed away from the operational position, procedures to be used following evacuation of the operations room, for example, should be in conventional printed form or available (in amended form at the alternative location).

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Contingency arrangements should be established to ensure that reference documents can be accessed within a reasonable period in the event that the computer normally used for the task fails or is not available.
　
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本文鏈接地址：CAP 670 Air Traffic Services Safety Requirements 1(62)