This Circular is re-issued to fully adopt ICAO wake turbulence separation standards for the A380-800, particularly where an A380-800 follows another A380-800 in both the approach and departure phases of flight. The circular is also amended to conform to ICAO PANS ATM for Heavy category aircraft following Heavy category aircraft in the departure phase. This Circular is intended for all airspace users and Air Navigation Service Providers (ANSPs) and incorporates the ICAO guidance issued in relation to the Airbus A380-800 and states the aircraft weight categories used by ANSPs when sequencing aircraft in the approach and departure phase. This Circular also re-states the general warning on wake vortex characteristics, illustrates a number of wake turbulence techniques and continues to encourage reporting of all wake turbulence encounters as a valuable contribution to the development of understanding and safe practice in relation to this important safety topic.