3LD and Telephony Designator - Modify Designator

3LD and Telephony Designator - Modify Designator

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Three-letter and telephony designators are assigned on a worldwide basis to an aircraft operating or servicing company for commercial domestic/international operations.

If you are an aircraft operating agency, aeronautical authority or service provider associated with international aviation and you already have a three-letter and a telephony designator intended for use on the international aeronautical telecommunications services, but need to modify the three-letter and/or the telephony designator, please purchase this PIN and copy/paste it in the Modify Request Form that you will find in the 3LD website https://www.icao.int/3LD under industry.