Separation between departing aircraft is applied so that after one aircraft takes off, the next aircraft does not take-off with less than the number of minutes needed. There are 3 main departure separation methods; Vortex Separation, Route Separation and Speed Separation
|First Aircraft Vortex Category||Second Aircraft Vortex Category||Separation (Mins)|
The time is counted from the moment the 1st aircraft's main landing gear leaves the ground. (At certain airfields it is counted from the time the aircraft starts its take-off roll.) If the first aircraft commences a full length take-off and the following aircraft departs from an intersection, the spacing must be increased to 3 minutes.
1 minute separation - The aircraft fly on tracks diverging by 45° or more immediately after take-off.
2 minute separation - The preceding (first) aircraft has filed a true airspeed 40 knots or more faster than the following (second).
5 minute separation - The preceding (first) aircraft has filed a true airspeed of 20 to 39 knots faster than the following aircraft.
10 minute separation - Any other case
ATC Units may have their own reduced separations. These will be detailed in the airport information on our website.
|Group 3||Group 2||Group 1||Group 0|
|All jet aircraft excluding:||BA46||BE20||BE99|
When a faster aircraft follows a slower aircraft, the minimum separation is increased by one minute for each successive group (e.g. Group 3 following Group 2, add 1 minute. Group 3 following Group 0, add 3 minutes)
The time is counted from the moment the first aircraft begins its takeoff roll. If the first aircraft commences a full length take-off and the following aircraft departs from an intersection, the spacing should be increased to 3 minutes.