Pdf — Doc 7910

Pay attention to the status column. Sometimes a designator is marked as "Non-Active" or "Revoked." Using a revoked code will cause errors in the ATC system.

The usually narrows it down to the specific country within that region. For example, in the EG block, G specifically refers to the United Kingdom. doc 7910 pdf

ICAO Doc 7910, "Location Indicators," is an authoritative, data-heavy reference manual providing the global directory for four-letter codes assigned to airports and aeronautical facilities. It structures data by country/region, including location indicators, IATA codes, and flight information region (FIR) addresses to support air traffic management and flight planning. To access the most current official version of the manual, visit the ICAO Store . 7910 Location Indicators | PDF | Civil Aviation - Scribd Pay attention to the status column

Because even a minor mismatch in a location indicator could cause an automated flight plan to fail—or worse, route a message to the wrong air traffic control center—ICAO publishes brand-new editions of Doc 7910 quarterly (March, June, September, and December). 🔒 Accessing the PDF For example, in the EG block, G specifically