The NAT HLA course reviews significant concepts, definitions, and procedures related to operations in the North Atlantic High-Level Airspace (NAT HLA). The 9 modules in the course will provide instruction on the NAT HLA structure, aircraft separation, RVSM, required equipment, required documents, FMS flight plan entry, plotting charts, oceanic clearance and entry, Strategic Lateral Offset Procedure (SLOP), oceanic exit, post-flight and contingency procedures.