GM1 ATS.TR.400(a)(2) Application
ED Decision 2020/008/R
INSTRUCTIONS
ON ALERTING SERVICE PROVISION TO AIRCRAFT OTHERWISE KNOWN TO AIR TRAFFIC
SERVICES UNITS
An air traffic services provider should ensure that appropriate instructions, approved by the competent authority, are provided to its air traffic services units regarding the provision of alerting service to aircraft ‘otherwise known to the air traffic services’. Such instructions should include options for cases where radio contact is not mandatory and a voluntary radio-communication has been interrupted without proper termination of the contact. These instructions should clarify what kind of information may be used for providing alerting service to aircraft which have not filed a flight plan, based on the available technologies and local operational conditions (e.g. use of emergency transponder codes or declared emergency of available communication channels).
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