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FOREWORD
1. Historical background
1.1 The Procedures for Air Navigation Services — Rules of the Air and Air Traffic Services (PANS-RAC) are the result of the progressive evolution of the Procedures for Air Navigation Services — Air Traffic Control (PANS-ATC) prepared by the Air Traffic Control Committee of the International Conference on North Atlantic Route Service Organization (Dublin, March 1946).
1.2 A second version of the PANS-ATC was issued in the same year, following review of the original procedures by the International Conference on European-Mediterranean Route Service Organization (Paris, April-May 1946).
1.3 The Third Edition of the PANS-ATC was prepared in 1947 by the Rules of the Air and Air Traffic Control (RAC) Division at its Second Session (Montreal, December 1946-January 1947).
1.4 Originally applicable on a regional basis, the PANS-ATC became applicable on a world-wide basis on 1 February 1950.
1.5 The Fourth Edition (1951) was given its present title Procedures for Air Navigation Services — Rules of the Air and Air Traffic Services (PANS-RAC) on the recommendation of the Fourth Session of the Rules of the Air and Air Traffic Control (RAC) Division (Montreal, November-December 1950). The new title reflects the fact that certain procedures applicable to pilots and a number of procedures relating to the provision of flight information and alerting service were included therein, in addition to the operation of the air traffic control service.
1.6 New editions were issued subsequently. The origin of each edition issued since 1946 and subsequent amendments thereto are shown in Table A, together with a list of the principal subjects involved, the dates on which the amendments were approved by the Council and the dates on which they became applicable.
2. Scope and purpose
2.1 The Procedures for Air Navigation Services — Rules of the Air and Air Traffic Services (PANS-RAC) are
complementary to the Standards and Recommended Practices contained in Annex 2 — Rules of the Air and in Annex 11 — Air Traffic Services. They are supplemented when necessary by regional procedures contained in the Regional Supplementary Procedures (Doc 7030).
2.2 The Procedures for Air Navigation Services — Rules of the Air and Air Traffic Services (PANS-RAC) specify, in greater detail than in the Standards and Recommended Practices, the actual procedures to be applied by air traffic services units in providing the various air traffic services to air traffic.
3. Status
3.1 The Procedures for Air Navigation Services (PANS) do not have the same status as the Standards and Recommended Practices. While the latter are adopted by Council in pursuance of Article 37 of the Convention on International Civil Aviation, subject to the full procedure of Article 90, the PANS are approved by the Council and recommended to Contracting States for world-wide application.
3.2 Whilst the PANS may contain material which may eventually become Standards or Recommended Practices (SARPs) when it has reached the maturity and stability necessary for adoption as such, they may also comprise material prepared as an amplification of the basic principles in the corresponding SARPs, and designed particularly to assist the user in the application of those SARPs.
4. Implementation
4.1 The implementation of procedures is the responsibility of Contracting States; they are applied in actual operations only after, and in so far as, States have enforced them. However, with a view to facilitating their processing towards implementation by States, they have been prepared in language which will permit direct use by air traffic services personnel and others associated with the provision of air traffic services to international air navigation.
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