Document ID: chunk:federal_register_of_legislation:F2022C00813:reg:300:p4
Version: federal_register_of_legislation:F2022C00813
Segment Type: reg
Provision Reference: reg 300 (pt 4/27)
Character Range: 80265–83246

BoM forecasting services are not available;

(c)          protracted unserviceability (ie. greater than 7 days) of any ground equipment associated with the approach aid exists;

(d)         an aerodrome control service is not provided.

8.1.11              International IFR Operations Outside Australia

8.1.11.1         Alternate minima must be determined:

(a)         in accordance with paragraph 8.1.9; or

(b)         by adding forecast tolerances for ceiling and visibility to the minima of the second lowest independent approach procedure suitable for the operation and for which the aircraft is equipped.
Note: If State forecast tolerances cannot be determined, or there is a doubt on the availability/reliability of the approach aid, a ceiling tolerance of 500 ft and visibility tolerance of 2 km must be used.

8.1.11.2         Except for ILS with approved Category I minima, the procedures used by each navigation system must be independent of each other. In determining alternate criteria, minima lower than ILS Category I must not be considered.

8.1.11.3         If the aerodrome has straight-in procedures to a runway that is not suitable for the operation and if circling is approved, the alternate minima must not be lower than the circling minima plus the forecast tolerances.

8.1.11.4         The approved alternate minima must be the greater of:

(a)         the values determined by the foregoing paragraphs;

(b)         the values approved by the State operating the aerodrome;

(c)          400 ft ceiling and 1,600 m visibility where the values determined in paragraph 8.1.11.4(a) above are based entirely on precision landing minima; or

(d)         800 ft ceiling and 3,000 m visibility where the values determined for paragraph 8.1.11.4(a) above are not based solely on precision landing minima.
Notes: 1. Independent means that the two procedures will not utilise a common radio navigation aid.
 2. Where provided, a terminal area radar control service may be considered as an independent radio navigation aid for an approach to a point not later than 2 NM prior to the FAF.

8.1.11.5         The alternate minima determined above will vary with aerodrome, aircraft and radio aid serviceability and may be assessed only immediately prior to departure.
Notes: 1. Independent means that the two procedures will not utilise a common radio navigation aid.
 2. Where provided, a terminal area radar control service may be considered as an independent radio navigation aid for the following parts of the procedure
 a. approach. To a point defined by CASA which shall not be later than the FAF
 b. missed approach. After a point defined by CASA which shall not be before the acceleration segment.
 3. A categorised ILS may be considered as two independent procedures.
 4. Operators may select nominal alternate values for ports. However, this does not absolve the captain of the pre-flight planning responsibility referred to in paragraph 8.1.11.5. Further,