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
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.
Completed CAA Form CA 4040 should be emailed to email@example.com. At present, no charge is made for NAT HLA Approval for AOC holders. Applicants should also inform their
assigned Flight Operations Inspector.
Completed CAA Form CA 4040, together with the appropriate fee, should be emailed to firstname.lastname@example.org. Details of costs can be found in the CAA Scheme of
Charges for General Aviation.
CAA Shared Services Centre (Navigation)
Telephone: +44 (0) 3300 221 908Email: email@example.com
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