7030_cons_en - Regional Supplementary Procedures.pdf

Regional Supplementary Procedures EUR 6-13f) In the event of data not being correlated by the receiving computer with an appropriate entry in itsflight plan database, the computer shall originate a warning to the appropriate ATC sector to takenecessary action for the acquisition of missing flight plan details. This shall normally involve atelephone inquiry.g) In the event of incomprehensible or illogical data being detected within the message, the computershall initiate an appropriate warning to the ATC sector involved, if this can be determined, for furtheraction.Note.— Any system-initiated warning shall require reversion to verbal coordination.6.12.4.4 Data protection procedure6.12.4.4.1 Appropriate safeguards in the automatic communication process shall be provided using a logicalacknowledgement procedure.6.12.4.4.2 This procedure shall be based on the following basic rules:a) The receiving computer shall transmit a LAM in response to an activation message received andprocessed, up to the point where the operational content will be presented to the appropriate air trafficcontroller.b) The transferring ATC unit shall set an agreed reaction parameter time of up to two minutes fromtransmission of the activation message. If the LAM is not received within that time frame, anoperational warning shall be initiated and reversion to telephone and manual mode shall ensue. If theappropriate ATC sector cannot be determined, a LAM shall not be transmitted.6.13 FLIGHT INFORMATION SERVICE (FIS)6.13.1 Automatic terminal information services (ATIS)(A11 – Chapter 4)6.13.1.1 An ATIS broadcast shall not require the assignment of a VHF channel that is subject to internationalchannel assignment.6.13.1.2 An ATIS broadcast, when containing departure information only and when requiring transmission on adiscrete channel, shall be transmitted on a ground control VHF channel.6.13.1.3 ATIS broadcast messages need not contain an instruction that, on initial contact with the appropriate ATSunit, the pilot acknowledge receipt of the ATIS message.6.13.2 SIGMETs(P-ATM – Chapter 9)6.13.2.1 Transmission of SIGMET information to aircraft shall be at the initiative of the appropriate ATS unit, by thepreferred method of directed transmission followed by acknowledgement, or by a general call when the number ofaircraft would render the preferred method impracticable.30/11/07