Effective March 1, 2022, North Atlantic tracks at FL330 and below will no longer be published. As a result, flights operating at FL330 and below will be free of the organized track structure. Although there have never been restrictions for random routing crossing tracks, this will aid the operators who plan not to cross tracks at active flight levels.


Read more: NAT HLA Tracks FL330 and Below to be Abolished


Beginning on 25 Feb 2021, Datalink-equipped aircraft may cross anywhere in the NAT HLA airspace.


Datalink mandated airspace is again  FL290-FL410.  Non-Datalink-equipped aircraft may only cross the NAT HLA at any altitude provided the flight is constrained to the surveillance airspace.   Additionally, the Non-Datalink aircraft must have operational ADS-B while over Greenland and conduct the flight under VHF coverage.

Read more: NAT HLA Data Link Mandate Back In Force

What/When: ICAO Doc 4444 revision effective 5 Nov. 2020, Amendment 9 to PANS-ATM is intended to address the requirements and procedures for:

  • Separation methods and minima
  • ATS Surveillance services
  • Procedures related to in-flight contingencies in oceanic airspace
  • Wake turbulence categories of aircraft
  • Special air reports; and
  • Strategic lateral offset procedures (SLOP)

Read more: ICAO Doc 4444 PANS-ATM 9 Changes