Document ID: chunk:federal_register_of_legislation:F2023C00696:body:0:p52
Version: federal_register_of_legislation:F2023C00696
Segment Type: other
Provision Reference: 
Character Range: 202243–206127

"ON FINAL - LEFT (final approach altitude)", provided that the following aircraft is instructed to descend at "STANDARD RATE" (or at 500 FT per minute).

10.7.7              Vertical Separation Using ADS-C

10.7.7.1         A tolerance of ± 200 ft must be applied to ADS-C level information.

10.7.7.2         ADS-C level information may be used for the application of vertical separation if:

(a)         the reported ADS-C level is FL 130 or above; and

(b)         displayed ADS-C level information is within the specified tolerance of the expected or cleared flight level.

10.7.7.3         An aircraft cleared to leave a level is taken to have commenced its manoeuvre and vacated the previously occupied level when the ADS-C-derived level information indicates a change of 400 ft or more in the anticipated direction from its previously assigned level.

10.7.7.4         If displayed ADS-C level information for an aircraft maintaining a level does not conform to the required tolerance, the controller must send a demand contract request to update the level displayed.

10.7.7.5         If, following the update, the level is still beyond the required tolerances, the pilot must be advised accordingly and requested to confirm the aircraft's level. If, following confirmation of the level, the displayed ADS-C level information is still beyond the required tolerance, another method of separation or another method of determining level information must be applied.

10.7.8              Transition Layer, Altitude and Level

10.7.8.1         The system of altimetry used in Australia makes use of a Transition Layer between the Transition Altitude of 10,000 FT and the Transition Level of FL110, to separate aircraft using QNH from those using 1013 Hpa. Cruising in the transition layer must not be permitted.

10.7.9              Common Altimeter Settings

10.7.9.1         In the application of vertical separation at or below the transition altitude, aircraft using terminal QNH and aircraft using Area QNH may be considered to be using common settings.

10.7.10         Levels Unavailable when QNH less than 1013

10.7.10.1     Whenever the QNH/Area QNH is less than 1013 HPa, certain flight levels at or above the transition level are precluded from use in accordance with Table 10.7-1:
Table 10.7‑1
QNH less than  Level not available
1013 HPa       FL110
997 HPa        FL115
980 HPa        FL120

10.7.11         Vertical Separation Minima

Minima                                                             Application                                                                                                             Conditions                                                                           Diagram
V1                                                                   1. Between IFR and VFR flights; or                                                                                      1. Both aircraft are 7 000 kg MTOW or less.
500 ft                                                               2. between SVFR flights, where SVFR clearance is due to visibility                                                      2. Both aircraft are at or below 10 000 ft.
                                                                                                                                                                                             3. Traffic information is provided to the IFR flight, unless it is impracticable.
V2                                                                 All aircraft                                                                                                            Up to and including FL 290.
1 000 ft
Aircraft with RVSM approval, excluding military formation flights  From FL 290 to FL 410 inclusive.
V3                                                                   1. Between aircraft,