Document ID: chunk:federal_register_of_legislation:F2025C00050:body:0:p315
Version: federal_register_of_legislation:F2025C00050
Segment Type: other
Provision Reference: 
Character Range: 1097607–1101237

fronts:
(i)             formation/mechanism of quasi-stationary front;
(ii)            associated clouds and weather;
(iii)          hazards presented by quasi-stationary fronts.
2.7                    Air masses and frontal analysis
2.7.1              Frontal depressions:
(a)           formation of frontal depressions;
(b)           warm and cold fronts:
(i)             occlusion process;
(c)           distribution of weather;
(d)           depression families and troughs;
(e)           flight conditions in and over depressions.
2.7.2              Non-frontal depressions:
(a)           associated weather and flying conditions;
(b)           thermal, orographic and secondary depressions.
2.7.3              Anticyclones:
(a)           general properties of anticyclones;
(b)           cold and warm anticyclones.
2.7.4              Stream weather:
(a)           general properties of streams;
(b)           weather to be expected in typical stream situations.
2.8                    Synoptic charts
2.8.1              Presentation of synoptic charts:
(a)           common symbology and presentation of data;
(b)           interpretation of data.
2.8.2              Basic analysis and prognostic rules:
(a)           movement of pressure systems and development of pressure systems in the Australian region;
(b)           movement of fronts and development of fronts;
(c)           general prognosis of situations represented on synoptic charts:
(i)             in the next 1 to 2 hours;
(ii)            in the next 24 hours.
2.8.3              Aviation significance of synoptic chart:
(a)           apply data from a synoptic chart to the selection of a route and destination/alternate;
(b)           interpret data from a synoptic chart to estimate the surface weather expected at a selected point, at the time represented by the chart or at a time shortly later:
(i)             surface wind;
(ii)            type, amount and base of lowest cloud;
(iii)          probability of rain;
(iv)          probability of other features significant to aviation (for example, dust, fog, etc.).
2.9                    Upper level weather
2.9.1              The tropopause:
(a)           atmospheric division represented by the tropopause:
(i)             temperature profile below and above the tropopause;
(b)           variation in height of tropopause:
(i)             at different latitudes;
(ii)            in different seasons;
(c)           variation in wind in the vicinity of the tropopause;
(d)           temperature profile above the tropical and polar tropopause.
2.9.2              Upper level jet streams and CAT:
(a)           recognise statements which define a jet stream;
(b)           compare the strengths of typical tropical and polar jets;
(c)           state conditions which may affect the strength and location of jet streams;
(d)           recall that wind shear is usually greater on the polar side of the jet than on the equatorial side;
(e)           list/identify signs which would suggest the presence of a jet stream and/or CAT;
(f)             state pilot actions which would minimise the effect of CAT whilst flying:
(i)             in the vicinity of a jet core;
(ii)            in CAT not associated with a jet stream.
2.9.3              Flight conditions associated with:
(a)           dense jet stream cirrus and cirrus haze;
(b)           flight at high level in the vicinity of well-developed thunderstorm tops.
2.10                Upper level weather charts
2.10.1          Presentation of charts:
(a)           types of charts:
(i)             upper level prognostic charts (brief general