7030_cons_en - Regional Supplementary Procedures.pdf

MID/ASIA 6-8Regional Supplementary Procedures6.12 ATS MESSAGES6.12.1 Flight plan and departureNil.6.12.2 ArrivalNil.6.12.3 Boundary estimatesNil.6.12.4 Computer-assisted coordinationNil.6.13 FLIGHT INFORMATION SERVICE (FIS)6.13.1 Automatic terminal information services (ATIS)Nil.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.6.13.2.2 SIGMET information passed to aircraft shall cover a portion of the route up to two hours’ flying time aheadof the aircraft.6.13.3 Special air-reportsNil.6.13.4 Amended aerodrome forecasts(P-ATM – Chapter 9)6.13.4.1 Amended aerodrome forecasts shall be passed to aircraft within 60 minutes from the aerodrome ofdestination, unless the information has been made available through other means.30/11/07