CIRCULAR RUNWAY VISUAL RANGE OBSERVING AND REPORTING PRACTICES Approved by the Secretary General and published under his authority INTERNATIONAL CIVIL AVIATION ORGANIZATION MONTREAL CANADA
Publisfied in separute English, Frelzch, Spani.rh und Russiun editions by rhc Illter- rzationcll Civil Aviation Organization. All correspondence, except orders ctrzd sub- scriptions, sltould be addressed to the Secretarj3 Gencrui of iCAO, Inertutionul Aviution Building, 1080 Universit Srrcet, Montreal 101, Quebec, Canadu. Orders for this publication should be sent to one of the following addresses, together with the appropriate remittance by bank draft or post office money order in U.S. dollars or the currency of the country in which the order is placed or in a freely convertible currency. Canada Information Canada, Ottawa, On- Mexico Representante de la OACI, Oficina tario. NorteamCrica y Caribe, Apartado postal 5-377, Mexico 5, D.F. Egypt Arab Republic of ICAO Represen- tative, Middle East and Eastern African Peru Representante de la OACI, Oficlna Office, 16 Hassan Sabri, Zamalek, Cairo. SudamCrica, Apartado 4 1 27, Lima. France ReprCsentant de I'OACI, Bureau Europe, 3bis, villa Emile-Bergerat, 92 Neuilly - sur-Seine. India Oxford Book and Stationery Co., Scindia House, New Delhi or 17 Park Street, Calcutta, Japan Japan Civil Aviation Promotion Foundation, No. 38 Shiba Kotohira-Cho, hlinato-Ku, Tokyo. Senegal ReprCsentant de I'OACI, Bureau Afrique, Boite postale 2356, Dakar. Sweden C.E. Fritzes Kungl. Hovbokhandel, Fredsgatan 2, Box 16356, Stockholm 16. Thailmd ICAO Representative, Far East and Pacific Office, P.O. Box 614, Bangkok. United Kingdom Her Majesty's Stationery Office, P.O. Box 569, London, S.E. I. international Civil Aviation Organization Attention Distribution Officer, lnternatonal Aviation Building, 1080 University Street, Montreal 101, Quebec, Canada. Do you receive the lCAO BULLETIN The ICAO Bulletin contains a concise account of the octrvtes of the Organization as well as articles of interest to the aero. nauficol world. The Bulletin will also keep you up to dote on the latest lCAO publications, their contents, amendments, supplements, corri- genda, and prices. Available in three separate edltibnr English. French and Spanish. Annual subscription U.S. 9.00 surface mall, U S. 17.00 air mall
RUNWAY VISUAL RANGE OBSERVING AND REPORTING PRACTICES ICAO Circular 113-AN /85 Approved by the Secretary General and published under his authority
FOREWORD The Meteorology and Operations Divisional Meeting 1964, held simultaneously with the Third Session of the Codssion for Aeronautical Meteorology of the World Meteoro- logical Organization, recommended that ICAO should secure from Contracting States up-to- date information on their runway visual range observing and reporting practices and that ICAO should consolidate, edit and publish this information for use by Contracting States and others concerned Doc. 8411, MET/OPS 1964, Recommendation 314. In accordance with the above recommendation, a summary of runway visual range observing and reporting practices was circulated by ICAO in 1967 and a second revised summary was circulated in 1971. The interest generated among States by the circulation of the two summaries was such as to justify the issue of the additional and updated material received by the end of 1972 in an ICAO Circular. The Circular reflects current ICAO regulatory provisions and includes information on current practices which has been provided by a number of States. Also included is detailed technical and theoretical material on the observing and reporting of runway visual range and information on progress with slant visual range determination in view of the close relationship between the two concepts of runway and slant visual range.