Document ID: chunk:federal_register_of_legislation:F2024C01173:reg:6:p2
Version: federal_register_of_legislation:F2024C01173
Segment Type: reg
Provision Reference: reg 6 (pt 2/7)
Character Range: 94571–97304

aeroplane for the flight; or
 (b) both of the following apply:
 (i) the period of overlap of the estimated time of use and the time period of the change indicator is less than 60 minutes;
 (ii) holding fuel equal to the number of minutes of the overlap is carried by the aeroplane for the flight; or
 (c) subsection (4B) applies.
 (4B) When an authorised weather forecast contains multiple change indicators of INTER or TEMPO, those weather conditions are taken to be present for a time period mentioned in subsection (4) or (4A) that is relevant to the most operationally limiting change indicator, other than in the case that holding fuel for the most operationally limiting change indicator is carried by the aeroplane for the flight.
 (4C) For the purposes of a circumstance mentioned in subsection (4), (4A) or (4B) (the relevant provision) regarding the carriage of holding fuel, if:
 (a) the flight of the aeroplane is to a planned destination aerodrome that is an isolated destination aerodrome; and
 (b) the destination alternate fuel required by subsection 7.02(4) is in excess of the final reserve fuel carried and required for the flight by at least the amount of holding fuel mentioned in the relevant provision;
then, the holding fuel is taken to be carried by the aeroplane.

Probability indicators etc.
 (5) Subject to subsection (7), if an authorised weather forecast includes a probability indicator of 30% or 40% of relevant weather conditions at any time during the estimated time of use, the weather conditions are taken to be present in the time period associated with the probability indicator.
Note: This section may also be affected by subsection 4.07(8) or 4.06(6).
 (6) Despite subsection (5):
 (a) a probability indicator of 30%; or
 (b) a combination of a probability indicator of 30% and a change indicator of intermittent deteriorations; or
 (c) a combination of a probability indicator of 30% and a change indicator of temporary deteriorations;
contained in an aerodrome forecast, or an ICAO landing forecast, for an EDTO en‑route alternate aerodrome at the estimated time of use, does not need to be considered when determining whether relevant weather conditions in relation to cloud ceiling exist under section 4.19.
Note: The CASR Dictionary defines cloud ceiling as having "the same meaning as ceiling in Annex 2 to the Chicago Convention". At the commencement of this instrument, Chapter 1 of the Annex included the following definition:
 "Ceiling. The height above the ground or water of the base of the lowest layer of cloud below 6 000 metres (20 000 feet) covering more than half the sky."
 (7) Subsection (5) does not apply if the authorised weather forecast being used:
 (a) is a TAF3; and