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22.214.171.124.1When an air traffic services unit is aware thatan aircraft in its area is experiencing radiocommunicationfailure, an RCF message shall be transmitted to all subsequentATS units along the route of flight which have alreadyreceived basic flight plan data (FPL or RPL) and to theaerodrome control tower at the destination aerodrome, if basicflight plan data has been previously sent.126.96.36.199.2If the next ATS unit has not yet received basicflight plan data because it would receive a current flight planmessage in the coordination process, then an RCF messageand a current flight plan (CPL) message shall be transmitted tothis ATS unit. In turn, this ATS unit shall transmit an RCFmessage and a CPL message to the next ATS unit. The above
11-6Air Traffic Management (PANS-ATM)1/11/01process shall be repeated progressively from centre to centreup to the first ATS unit along the remaining route of flight towhich basic flight plan data has already been sent.11.4.2Movement and control messages188.8.131.52Messages concerning the intended or actualmovement of aircraft shall be based on the latest informationfurnished to air traffic services units by the pilot, the operatoror its designated representative, or derived from ground-based radar.184.108.40.206FILEDFLIGHTPLANMESSAGESANDASSOCIATEDUPDATEMESSAGES220.127.116.11.1Filed flight plan messages and associatedupdate messages comprise:—filed flight plan messages (18.104.22.168.2)—delay messages (22.214.171.124.3)—modification messages (126.96.36.199.4)—flight plan cancellation messages (188.8.131.52.5)—departure messages (184.108.40.206.6)—arrival messages (220.127.116.11.7).18.104.22.168.2FILEDFLIGHTPLAN(FPL) MESSAGESNote.— Instructions for the transmission of an FPLmessage are contained in Appendix 22.214.171.124.2.2.1Unless repetitive flight plan procedures arebeing applied or current flight plan messages are beingemployed, filed flight plan messages shall be transmitted forall flights for which a flight plan has been submitted with theobject of being provided with air traffic control service, flightinformation service or alerting service along part or the wholeof the route of flight.126.96.36.199.2.2A filed flight plan message shall beoriginated and addressed as follows by the air traffic servicesunit serving the departure aerodrome or, when applicable, bythe air traffic services unit receiving a flight plan from anaircraft in flight:a)an FPL message shall be sent to the ACC or flightinformation centre serving the control area or FIRwithin which the departure aerodrome is situated;b)unless basic flight plan data are already available asa result of arrangements made for repetitive flightplans, an FPL message shall be sent to all centres incharge of each FIR or upper FIR along the routewhich are unable to process current data. In addition,an FPL message shall be sent to the aerodromecontrol tower at the destination aerodrome. If sorequired, an FPL message shall also be sent to flowmanagement centres responsible for ATS units alongthe route;c)
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air traffic, air traffic services, air navigation services