AMC1 ATS.TR.210(c)(2)(i) Operation of air traffic control service
ED Decision 2020/008/R
PROCEDURAL
SEPARATION — LONGITUDINAL SEPARATION MINIMA BASED ON TIME — AIRCRAFT
MAINTAINING THE SAME LEVEL
For aircraft flying at the same level, the longitudinal separation minima based on time should be one of the following:
(a) Aircraft flying on the same track and same level
(1) 15 minutes (see Figure 6); or
Figure 6: 15-minute separation between aircraft on the same track and same level
(2) 10 minutes if navigation aids permit frequent determination of position and speed (see Figure 7); or
Figure 7: 10-minute separation between aircraft on the same track and same level
(3) 5 minutes in the following cases, provided that in each case the preceding aircraft is maintaining a TAS of 37 km/h (20 kt) or more faster than the succeeding aircraft (see Figure 8)
Figure 8: 5-minute separation between aircraft on the same track and same level
(i) between aircraft that have departed from the same aerodrome;
(ii) between en-route aircraft that have reported over the same exact significant point;
(iii) between departing and en-route aircraft after the en-route aircraft has reported over a fix that it is so located in relation to the departure point as to ensure that 5-minute separation can be established at the point the departing aircraft will join the air route; or
(4) 3 minutes in the cases listed under point (a)(3), provided that in each case the preceding aircraft is maintaining a TAS of 74 km/h (40 kt) or more faster than the succeeding aircraft (see Figure 9)
Figure 9: 3-minute separation between aircraft on the same track and same level
(b) Aircraft flying on crossing tracks
(1) 15 minutes at the point of intersection of the tracks (see Figure 10); or
Figure 10: 15-minute separation between aircraft on crossing tracks and same level
(2) 10 minutes if navigation aids permit frequent determination of position and speed (see Figure 11).
Figure 11: 10-minute separation between aircraft on crossing tracks and same level