FOREWORD

This document contains a list of ICAO four-letter location indicators and, for ease of reference, corresponding three-character International Air Transport Association (IATA) location identifier codes for geographical locations throughout the world. Also included is a list of addresses of centres in charge of flight information regions (FIRs) and/or upper flight information regions (UIRs).

LOCATION INDICATORS

Location indicators are assigned by States and are checked by ICAO for conformity with the “Formulation and assignment of location indicators” set out below.

Stability in location indicators assigned is important, hence changes should be made only after due consideration. This document is published quarterly as a service to international aviation. Any errors or omissions should be brought to the attention of the Secretary General of ICAO, 999 Robert-Bourassa Boulevard, Montréal, Quebec, Canada H3C 5H7.

The development of a system of location indicators arose from Recommendations 1.2/3, 1.2/4 and 1.2/5 of the Communications Division, Sixth Session (cf. Doc 7831), modified by Recommendation 3 of the Third Meeting and by Recommendation 3/1 of the Sixth Meeting of the ICAO Panel of Teletypewriter Specialists. These recommendations were approved by the Council at the 10th Meeting of its Thirty-second Session on 6 December 1957, at the 18th Meeting of its Thirtyfifth Session on 15 December 1958, and the 12th Meeting of its Fifty-seventh Session on 4 April 1966 respectively. The principles for the formulation and assignment of location indicators contained in these recommendations are given below.