Change of WELT2000 database format

02 Aug 2013

Airport codes are going to be unique per contry

The five letter codes of airports and outlanding fields (e.g. UETER) are going to be unique per country rather than worldwide in the future. This change will allow to identify homonymous airports with the same five letter code if they are located in different countries. Example: Brussels/Belgium versus Brussels/Canada

As of the update in February 2014 the assertion of worldwide unique five letter codes will be invalidated. Instead the compound of five letter code and country code (e.g. UETER DE) will be unique. Software and device vendors have to adjust their products up to that date.

The full specification of the WELT2000 database format is provided at

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