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"For ATM purposes and with reference to article 3(b) of the Chicago Convention, only aircraft used in military, customs and police services shall qualify as State Aircraft. Accordingly:
- Aircraft on a military register, or identified as such within a civil register, shall be considered to be used in military service and hence qualify as State Aircraft;
- Civil registered aircraft used in military, customs and police service shall qualify as State Aircraft;
- Civil registered aircraft used by a State for other than military, customs and police service shall not qualify as State Aircraft." - EUROCONTROL Provisional Council session 11, 12 July 2001.