This bulletin applies to all NAT FIRs EXCEPT Shanwick. OCR has not been implemented for Shanwick FIR. Past practice remains in place for traffic entering Shanwick from domestic airspace.

North Atlantic airspace includes the following airspace: New York Oceanic East (KZWY), Gander (CZQX), Reykjavik (BIRD), Bodø (above FL195) (ENOB), Shanwick (EGGX) and Santa Maria (LPPO). On 4 December 2024, all airspace in the NAT (North America track) system will have implemented the oceanic clearance removal (OCR) procedure, with the exception of Shanwick airspace. Under the OCR procedure, crews are required to submit the request for clearance (this procedure has remained unchanged). The flight will receive a message back, “RCL received by XXX.” This message will be sent from the airspace to which the RCL was submitted prior to oceanic entry (...)