• The North Atlantic (NAT) is the busiest of all oceanic airspace; direct pilot-controller communication is limited and radar surveillance is generally unavailable. Flight within NAT HLA airspace is only available with the required approval.

    The exact dimensions of the NAT HLA airspace are stated within The Air Navigation Order & Regulations.

    The ICAO North Atlantic Operation Manual provides the best source of guidance and information for those planning operations in NAT hla airspace.

    Applying for NAT HLA Approval- AOC holders

    Completed CAA Form CA 4040 should be emailed to navapprovals@caa.co.uk. At present, no charge is made for NAT HLA Approval for AOC holders. Applicants should also inform their assigned Flight Operations Inspector.

    Applying for NAT HLA Approval - NCC/NCO/SPO

    Completed CAA Form CA 4040, together with the appropriate fee, should be emailed to navapprovals@caa.co.uk. Details of costs can be found in the CAA Scheme of Charges for General Aviation.

    CAA Gateway Contact

    CAA Shared Services Centre (Navigation)
    Telephone: +44 (0) 3300 221 908
    Email: navapprovals@caa.co.uk