ATC
New Updates In Effect for NAT Operations
OpsGroup has advised its international operator members of four new ICAO bulletins updating North Atlantic Track (NAT) operations.

OpsGroup has advised its international operator members of four new ICAO bulletins updating North Atlantic Track (NAT) operations. The first bulletin (2019-001) formalizes a practice that has been in place since April in the Shanwick, Santa Maria, and New York Oceanic FIRs. After receiving a clearance with a fixed Mach number, expect that over the oceanic entry point, a CPDLC message could be received saying “resume normal speed.” If that speed varies by 0.02 Mach or more, ATC must be advised.


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