Circular 207. Simultaneous Operations on Parallel or Near-Parallel Instrument Runways (SOIR)

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Circular 207

Simultaneous Operations on Parallel or Near-Parallel Instrument Runways (SOIR)

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CIRCULAR SIMULTANEOUS OPERATIONS ON PARALLEL OR NEAR-PARALLEL INSTRUMENT RUNWAYS SOIR Approved by the Secretary General and published under his authority lNTERNAT lONAL CIVIL AVIATION ORGANtZAT ION MONTREAL m CANADA

Published in seporate English, French, Russian and Spanish edirions by the Infernafional Civil Aviation Organization. All correspondence, except orders und subscriptions, should be addreued lo the Secretary General. Orders for this publication should be sent to one of the following addresses, togtther with the appropriate remittance by bank draft or post office money order in U.S. dollars ar the currency of the country in which the order is placed. Document Sales Unit International Civil Aviation Organization 1OOO Sherbrookt Street West. Suite dOO Montreal, Quebec Canada W3A 2R2 Egypt. ICAO Representative, Middle East and Eastern African Office, 16 Hassan Sabri. Zamalek, Cairo. France. Reprtsentanr de I'OACI, Bureau Europe, 3 bis, villa Emile-Bergerat, 92522 NeuilIy-sur-Seine Cedex. India. Oxford Book and Stationery Co., Scindia House, New Delhi or 17 Park Street, Calcutta. Japan. Japan Civil Aviation Promotion Foundation, 15-12, 1-chome, Toranomon, Minato-Ku, Tokyo. Kenya. ICAO Representative, Eastern African Office, United Nations Accommodation, P.O. Box 46294 Nairobi. Mexico. Representante de la OACI, Oficina NorteamCrica y Caribe, Apartdo postal 5-377, C.F. 11590, Mbiw 5, D.F. Peru, Representante de la OACI, Oficina Sudamkrica, Apartado 4 127, Lima 100, SenegaJ Reprdsentant de I'OACI , Bureau A frique, Boite postale 2356, Dakar. Spin. Pilot's, Suministros AeronAuticos, S.A., C/Ulises, 5-Qficina NJm. 2, 28043 Madrid. Thafland. ICAO Representative, Asia and Pacific Office, P.O. Box 6 14, Bangkok. United Kingdom. Civil Aviation Authority, Printing and Fublications'Services. Grwille House, 37 Gratton Road, Cheltenham, Gtos., GL50 2BN. Do you receive the lCAO BULLETIN The ICAO Bulletin contalns a concise account of the activities of the Organlzatian as well as articles of interest to the aeronautical world. The Bulletin wlll also keep you up to date on the latest ICAO publications, their.contents, amendments, supplements, corrigenda and prices. Available in three separate editions English, French and Spanish. Annual subscription V.S.S20.00 surface mail U.S.25.00 air mail.

Foreword 1. GENERAL 1. I This circular on simultaneou operations on parallel or near-parallel instrument runways has been prepared by the ICAO Secretariat at the request of the Air Navigation Commission, and with the assistance of a study group made up of members nominated by several Contracting States and international organizations. 1.2 The experts participating in the study group were nominated by Canada, France, United Kingdom, United States, the Airport Associations Coordinating Council AACC, the International Air Transport Association IATA and the International Federation of Air Line Pilots' Associations IFALPA, and were suitably qualified and experienced in the planning and conduct of all aspects of simultaneous operations on parallel or near- parallel instrument runways. 1.3 The information contained in this circular is a compendium of the experience accumulated by several States, experience that is considered sufficient in nature and scope to be included in an ICAO circular. 2. BACKGROUND INFORMATION 2.1 On 13 March 1980 the Air Navigation Commission reviewed the Secretariat's report and proposals regarding the possibility of developing a Standard or Recommended Practice for minimum distances between instrument runways. When considering this issue, the Commission recognized the difficulty of working out an agreement on the parameters which would have to be taken into account in determining acceptable distances between parallel instrument runways and agreed on the need for ICAO to study the matter further. The Commission decided that States and interested international organizations should be invited to provide information on current practices and related questions with respect to minimum distance, between parallel runwavs for sirnultaneou5 use under instrument meteorological condition\. 2.2 The Secretariat, in response to this decision of the Commission, queried ten Contracting States and four international organizations, seeking views on several issue. related to minimum distances between parallel runways for simultaneous use under instrument meteorological conditions. The States selected were those considered to have experience in developing criteria for procedures relating to the separation of aircraft conducting instrument approaches to parallel runways. - 2.3 The information received indicated that four States have operational experience with simultaneous operations on parallel instrument runways and that these States have conducted studies on the subject. The requirements for the simultaneous use of such runways are considerable, and a number of States and organizations indicated firm views on what these requirements should be. There was also support for ICAO to develop specifications and undertake work on this subject. 2.4 When the Commission completed its review of the Secretariat's report on the views of selected States and international organizations on minimum distances between instrument runways used for simultanqous operations, it noted the complex nature of the subject and the fact that it covered virtually all the disciplines in the air navigation field. It also agreed that guidance material was needed to make clear to States the complexity of the subject. The Commission decided on 29 January 1981 to proceed with the study and established the Simultaneous Operations on Parallel or Near-Parallel Instrument Runways SOIR Study Group. 2.5 The study group held its first meeting in Montreal from 27 February to 2 March 1984. At the meeting, the study group discussed in detail the various modes of operation which could be used on parallel or near-parallel instrument runways, and agreed on classifications for four modes of operation. It also examined meteorological conditions in which visual operations could be conducted, and attempted to determine if specific aerodrome operating minima were linked to the use of simultaneous operations. The group rioted that there here no minima

ii SOIR Circular specific to sifiultaneous operations and that the operating new procedures. The study group also discussed the most minima used during these operations were those deter- practical way to develop material and specifications for mined for each runway considered in isolation, except that carrying out simultaneous operations on parallel or near- higher operating minima were sometimes required by parallel instrument runways. It agreed that the experience States when trials of simultaneous instrument operations accumulated by several States was sufficient to enable the were conducted on parallel or near-parallel runways to test study group to develop guidanze material on the subject.

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