CIRCULAR AN AIRCRAFT LANDING SYSTEM UTILIZING DEClMETRlC WAVES UHF Published by authority of the Secretary General INTERNATIONAL CIVIL AVIATION ORGANIZATION MONTREAL CANADA
This Publication is issued in English, French and Spanish. Published in Montreal, Canada, by the International Civil Aviation Organization. Correspondence concerning publications should be addressed to the Secretary General of ICAO, International Aviation Building, - 1080 University Street, Montreal, Canada Orders for ICAO publications should be sent, on payment In Canadian currency , to In Sterling or Irish currency s/d, to Secretary General, ICAO, The United Kingdom Stationery Office, International Aviation Building, P. 0. Box 569, 1080 University Street, London, S.E. 1, Montreal, Canada. England. Cable address ICAO MONTREAL Cable address HEMSTONERY LONDON In French currency fr, to ICAO Representative, European and African Office, 6obis, avenue dnICna, Paris i6e, France. Cable address ICAOREP PARIS In Peruvian currency soles, to ICAO Representative, South American Office, Apartado 680, Lima, Per6. Cable address ICAOREP LIMA In Egyptian currency m/ms, to ICAO Representative, Middle East Office, Wadie Saad Building, Sharia Salah el Dine, Zamalek, Cairo, Egypt. Cable address ICAOREP CAIRO In Australian currency s/d, to ICAO Representative, Far East and Pacific Office, 17 Robe Street, St. Kilda, Melbourne, Australia. Cable address IcAOREP MELBOURNE.
ICAO Circular 19-h6 3 FOREWORD The Council of ICAO considers that in the field of non-visual aids lx final approach and landing, a promising line of development lies in the field of microwave techniques and recornmends that investigation dong this line and along other promising lines of developent in this field be pursued in order to produce a complete landing systea aatiefying the functional requirements to a greater extent than the ICAO Sed Intrulent Landing System, The material contained herein records the wok that has been done in France on a landing system eploying decimetric waves UHF and providing on er c-on carrier loealizer and glide path guidance and distance information,, Ths material was submitted to the Fourth Session of the Commnicatione Diriaion by the Govermnent of France. The Division recommended that the inf'orraation ehould be disseminated to Statee in order to acquaint than with the ,technical features of the system and the experimental work that has been done.
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