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1 ! " # $ " $ ! ! % & ! ' !# ( )! $ % ! $ # * *+, * * - . // , - +* * 0 Published in separate English, Arabic, Chinese, French, Russian and Spanish editions by the INTERNATIONAL CIVIL AVIATION ORGANIZATION 999 Robert-Bourassa Boulevard, Montr al, Quebec, Canada H3C 5H7 For ordering information and for a complete listing of sales agents and booksellers, please go to the ICAO website at Fifteenth edition 2007 Sixteenth edition 2016 Doc 4444, Procedures for Air Navigation Services Air traffic Management Order Number.

2 4444 ISBN 978-92-9258-081-0 ICAO 2016 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, without prior permission in writing from the International Civil Aviation Organization. (iii) AMENDMENTS Amendments are announced in the supplements to the Catalogue of ICAO Publications; the Catalogue and its supplements are available on the ICAO website at The space below is provided to keep a record of such amendments.

3 RECORD OF AMENDMENTS AND CORRIGENDA AMENDMENTS CORRIGENDA No. Date applicable Date entered Entered by No. Date of issue Date entered Entered by Amendments 1-7-A incorporated in this edition. PANS-ATM (v) 10/11/16 TABLE OF CONTENTS Page (ix) CHAPTER 1.

4 Definitions .. 1-1 CHAPTER 2. ATS safety management .. 2-1 General .. 2-1 Objectives .. 2-1 ATS safety management activities .. 2-1 Monitoring of safety levels .. 2-2 Safety reviews .. 2-2 Safety 2-4 Safety-enhancing measures .. 2-5 CHAPTER 3. ATS system capacity and air traffic flow management .. 3-1 Capacity management .. 3-1 Air traffic flow management .. 3-3 CHAPTER 4. General provisions for air traffic services .. 4-1 Responsibility for the provision of air traffic control service.

5 4-1 Responsibility for the provision of flight information service and alerting 4-1 Division of responsibility for control between air traffic control units .. 4-2 Flight plan .. 4-3 Air traffic control clearances .. 4-5 Horizontal speed control instructions .. 4-8 Vertical speed control instructions .. 4-10 Change from IFR to VFR flight .. 4-11 Wake turbulence categories .. 4-12 Altimeter setting procedures .. 4-12 Position reporting .. 4-14 Reporting of operational and meteorological information.

6 4-18 Presentation and updating of flight plan and control data .. 4-21 Failure or irregularity of systems and equipment .. 4-22 Data link communications initiation procedures .. 4-22 CHAPTER 5. Separation methods and minima .. 5-1 Introduction .. 5-1 (vi) Air traffic Management (PANS-ATM) 10/11/16 Provisions for the separation of controlled traffic .. 5-1 Vertical separation .. 5-2 Horizontal 5-4 Separation of aircraft holding in flight .. 5-39 Minimum separation between departing aircraft.

7 5-39 Separation of departing aircraft from arriving aircraft .. 5-40 Time-based wake turbulence longitudinal separation minima .. 5-43 Clearances to fly maintaining own separation while in visual meteorological conditions .. 5-48 Essential traffic information .. 5-49 Reduction in separation minima .. 5-50 CHAPTER 6. Separation in the vicinity of aerodromes .. 6-1 Reduction in separation minima in the vicinity of aerodromes .. 6-1 Essential local traffic .. 6-1 Procedures for departing aircraft.

8 6-1 Information for departing aircraft .. 6-5 Procedures for arriving aircraft .. 6-5 Information for arriving aircraft .. 6-12 Operations on parallel or near-parallel runways .. 6-14 CHAPTER 7. Procedures for aerodrome control service .. 7-1 Functions of aerodrome control towers .. 7-1 Selection of runway-in-use .. 7-2 Initial call to aerodrome control tower .. 7-3 Information to aircraft by aerodrome control towers .. 7-3 Essential information on aerodrome conditions.

9 7-7 Control of aerodrome traffic .. 7-8 Control of traffic in the traffic circuit .. 7-12 Order of priority for arriving and departing aircraft .. 7-13 Control of departing aircraft .. 7-13 Control of arriving aircraft .. 7-15 Reduced runway separation minima between aircraft using the same runway .. 7-16 Procedures for low visibility operations .. 7-18 Suspension of visual flight rules operations .. 7-20 Authorization of special VFR flights .. 7-20 Aeronautical ground lights.

10 7-20 Designation of hot spot(s) .. 7-23 CHAPTER 8. ATS surveillance services .. 8-1 ATS surveillance systems 8-1 Situation display .. 8-3 Communications .. 8-3 Provision of ATS surveillance services .. 8-4 Use of SSR transponders and ADS-B transmitters .. 8-4 General procedures .. 8-8 Use of ATS surveillance systems in the air traffic control service .. 8-15 Emergencies, hazards and equipment failures .. 8-21 Table of Contents (vii) 10/11/16 Use of ATS surveillance systems in the approach control service.