Document ID: chunk:federal_register_of_legislation:F2024C01173:reg:6:p4
Version: federal_register_of_legislation:F2024C01173
Segment Type: reg
Provision Reference: reg 6 (pt 4/7)
Character Range: 99620–102513

apply at a take‑off alternate aerodrome: see subsection 9.12(1).
 (4) A take‑off alternate aerodrome that is planned for a flight must:
 (a) be available for use; and
 (b) meet the requirements in subsections (5) to (8).

Distance of take-off alternate from departure aerodrome
 (5) A take-off alternate aerodrome must be located within the following flight time from the departure aerodrome:
 (a) if the aeroplane has 2 engines—one hour of flight time, at a one‑engine‑inoperative cruising speed for the aeroplane, calculated in ISA and still air conditions, at the take‑off weight for the aeroplane;
 (b) if the aeroplane has 3- or 4 engines—2 hours of flight time, at a normal cruising speed for the aeroplane, calculated in ISA and still air conditions, at the take-off weight for the aeroplane;
 (c) within the maximum diversion time permitted by an EDTO approval held by the operator for the aeroplane, in the case where:
 (i) the aeroplane is conducting an EDTO flight; and
 (ii) a take-off alternate aerodrome mentioned in paragraph (a) or (b) is not available, taking into account the matters in subsection (6).
 (6) For subparagraph (5)(c)(ii), the matters are the following:
 (a) the safe operation of the aeroplane;
 (b) aerodrome meteorological conditions;
 (c) aeroplane operational limitations.

Landing minima for take-off alternate
 (7) An aerodrome can only be selected as a take-off alternate aerodrome if the authorised weather forecasts for the aerodrome, during the estimated time of use, indicate that the relevant weather conditions will not be present below the landing minima which:
 (a) meet the landing minima requirements; and
 (b) are appropriately adjusted to account for an assumption that the landing at that aerodrome will be conducted with one engine inoperative.
 (8) Weather conditions of an intermittent or temporary nature, that have a 30% or 40% probability indicator for deterioration, need not be taken into account when considering the weather conditions in the authorised weather forecast for the purpose of selecting a take-off alternate aerodrome under subsection (7).

4.08  Destination alternate aerodromes

Requirement
 (1) At least one destination alternate aerodrome must be planned for a flight of an aeroplane:
 (a) before the flight commences, unless an exception in subsection (2) or (3) applies to the flight; or
 (b) during the flight, if:
 (i) an exception in subsection (2) or (3) ceases to apply to the flight; or
 (ii) the exception in subsection (4) applies to the flight.

Exception—isolated destination aerodromes
 (2) It is an exception to the requirement in subsection (1) if the planned destination aerodrome is an isolated destination aerodrome.

Exception—weather and other conditions etc.
 (3) It is an exception to the requirement in subsection (1) if all of the following requirements, at the estimated time of use of the