Document ID: chunk:federal_register_of_legislation:F2023C00696:body:0:p48
Version: federal_register_of_legislation:F2023C00696
Segment Type: other
Provision Reference: 
Character Range: 181967–191114

vertically separated by the minimum amount appropriate to the DME table to be used.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                             3. The level change is commenced within 1 min of obtaining DME distances. When the separation is on the minimum, instructions must be issued to ensure that the level change is commenced within this time.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                             4. Where the position of 1 aircraft is determined by an ATS surveillance system, the applicable ATS surveillance system minimum must be added.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                             5. When using DME-derived information for level changes above FL 290, both aircraft must be on the same side of the DME beacon.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                             6. When applying this separation minimum to an aircraft transiting the transition level and the Area QNH is higher than 1013 hPa, 1 000 ft must be added to the amount of level change and the applicable value in the table must then be utilised (e.g. for a 3 000 ft level change, use 4 000 ft table).

D8a                                                                                                                                                                                                                                                                                                                                                     Reciprocal tracks and tracks differing by more than 90 degrees                                                     Reports indicate that the aircraft have passed and DME distance is opening.
Definite Passing
10 NM

(12 NM at distances greater than
180 NM)
D8b                                                                                                                                                                                                                                                                                                                                                     Reciprocal tracks                                                                                                    1. Reports indicate that the aircraft have passed and DME distance is opening.
Definite Passing                                                                                                                                                                                                                                                                                                                                                                                                                                                             2. One aircraft is within 20 NM of the DME beacon.
5 NM
D8c                                                                                                                                                                                                                                                                                                                                                     Reciprocal tracks                                                                                                    1. Reports by reference to a prominent topographical feature by 1 aircraft and a DME beacon by the other aircraft indicate that the aircraft have passed by at least 10 NM.
Definite Passing                                                                                                                                                                                                                                                                                                                                                                                                                                                             2. The non-DME equipped aircraft passes over and within 10 000 ft of the topographical feature.
10 NM                                                                                                                                                                                                                                                                                                                                                                                                                                                                        3. The topographical feature together with its distance from the DME beacon is specified in local Instructions.

10.6.12         RNAV Distance Separation Minima

Minima              Application                                                                    Conditions                                                                                                                                                                                                                                                                         Diagram
R1                  Departing aircraft on climb to vertically separated cruising levels              1.  Where B is climbing to the lower level, both A and B must report reaching their cruising levels.
20 RNAV                                                                                              2. If B reports at the cruising level first, immediate action must be taken to apply an alternative standard.
                                                                                                     3. May only be used in CTA.
                                                                                                     4. Aircraft must be approved:
                                                                                                        (a) AUSEP; or
                                                                                                        (b) GPSRNAV; or
                                                                                                        (c) GPSOCEANIC; or
                                                                                                        (d) RNP10; or
                                                                                                        (e) RNP4.
R2                  Definite Passing                                                                 1. Using the same waypoint, reports indicate that the aircraft have passed and the distance between them must be opening.
20 RNAV                                                                                              2. Whenever a DME derived distance is 30 NM or less, a correction for DME Slant Range Error must be applied.
                                                                                                     3. May only be used in CTA.
                                                                                                     4. Aircraft must be approved:
                                                                                                        (a) AUSEP; or
                                                                                                        (b) GPSRNAV; or
                                                                                                        (c) GPSOCEANIC; or
                                                                                                        (d) RNP10; or
                                                                                                        (e) RNP4.
R3                  Climbing, cruising