7030_cons_en - Regional Supplementary Procedures.pdf

Chapter 5.SURVEILLANCE5.1 SECONDARY SURVEILLANCE RADAR (SSR)(P-ATM – Chapter 8; P-OPS, Vol. I)5.1.1 Carriage of pressure-altitude reporting SSR transpondersNil.5.1.2 Code allocation methodologyNil.5.1.3 Assignment of SSR codes5.1.3.1 Except when otherwise prescribed by bilateral agreement between adjacent ACCs located in differentICAO Regions, ACCs providing air traffic services in FIRs adjacent to other regions should, when properly equipped,assign individual SSR codes to aircraft entering their FIRs from the adjacent regions. Such codes should be selectedfrom the subset allocated to the ACCs for assignment to international flights.5.1.3.2 As a general rule, an individual SSR code assigned to an international flight may be reassigned to anotherflight:whichever is the earlier.a) three hours after the departure of the lead aircraft; orb) when it is estimated that the lead aircraft has landed;5.1.4 Operation of pressure-altitude reporting SSR transpondersNil.5.1.5 Monitoring of SSR-derived informationNil.SAM 5-1 30/11/07