The call sign format for international call sign allocations.
2.
10 : 14 p . m . _ Pilot declares Pan Pan Pan, international call sign indicating problem that is not yet emergency; crew dons oxygen masks.
3.
On August 3, 2012 following an ITU update of the Table of International Call Sign Series, Niue has the entire E6 prefix block and ZK2 became available for AREC use.
4.
The United States Navy, United States Marine Corps, and United States Coast Guard use a mixture of tactical call signs and international call signs beginning with the letter " N ".
5.
In telecommunication, "'call-sign allocation plan "'is the table of allocation of international call sign series contained in the current edition of the " International Telecommunication Union ( ITU ) " Radio Regulations " ."
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