2 CAP 670 Structure - Format
2.1 Document control pages contain the title page, contents, amendment record page and a checklist of pages.
2.2 The Contents pages contain an overall list of contents for CAP 670 covering the Glossary, Abbreviations, Directory and Parts A, B, C and D.
2.3 The introductory matter contains a Glossary, list of abbreviations and Directory.
2.4 Part A Requirements and the Regulatory Framework - this part.
2.5 Part B Generic Requirements and Guidance, contains material which is structured according to the subject matter, and organised into individual documents within sections. The documents contain requirements, recommendations and notes which are interpreted in the same way as those for Part C.
2.6 Part C Communication, Navigation, Surveillance, Meteorological and Information and Alerting Systems contains individual documents, which are structured into Part 1 Preliminary Material and Part 2 Requirements. The Part 1 typically contains an Introduction and Scope. The Part 2 typically contains requirements and guidance material which are divided into:
a) safety objectives, b) mandatory requirements which have to be satisfied,
c) recommendations with which compliance is desirable but may not be appropriate in all situations,
d) acceptable means of compliance,
e) guidance and/or notes which provide additional information which may be useful to providers. Annexes and appendices associated with individual documents may also be used for guidance and notes.
2.7 Part D Human Resources addresses ATC unit manning and duty hours.
2.8 Reference Numbering Safety objectives, requirements and recommendations are identified by a unique number, which is to be found in round brackets after the applicable text e.g. (123). This system of numbering enables providers and regulators to know the exact wording against which any means of compliance was implemented and approval granted. Paragraph numbering may change but this reference number will never change whilst the text remains the same. If the text changes a new number will be allocated to it. Numbering is not sequential and not coded so nothing can be inferred from the number alone. Consecutive requirements may have numbers many hundreds apart.
3 CAP 670 Structure - Supplementary Amendments
3.1 Amendments to CAP 670 will be published on an approximate six-monthly routine cycle.
3.2 CAP 670 Supplementary Amendments (SAs) will be issued to introduce urgent or safety-critical changes to Regulatory Requirements where the routine amendment cycle would not suffice, or to inform users of changes or developments to Regulatory Requirements (typically EU regulations) and other related standards such as ICAO SARPs in a timely manner.
3.3 The CAP 670 Supplementary Amendment process will not replace the consultation process as described at paragraph 4.6. Consultations will still take place and will be made available at www.caa.co.uk/consultations.
3.4 CAP 670 SAs will be incorporated into the main body of the document in a suitable and timely manner.
4 Scope
4.1 Civil aviation in the United Kingdom is governed by legislation (principally European legislation, and the Air Navigation Order and its associated Rules of the Air Regulations) and International Standards and Conventions (principally those published by ICAO and EUROCONTROL) with which the United Kingdom, as a State, has agreed to comply.
4.2 The requirements contained in this document are applicable to air traffic services (defined in SES Regulations as flight information services, alerting services, air traffic advisory services and ATC services (area, approach and aerodrome control services) provided to aircraft within the UK Flight Information Region (FIR) and other airspace) for which responsibility has been designated to the United Kingdom through international agreement.
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