Flight and Duty

CASA CAO 48.1 Instrument 2019 Flight and Duty Rules

CAO 48.1 Instrument 2019 Discretions – last updated Oct 2021

The Aerotrack Ops application displays discretions if flight and duty limitations are exceeded. Each discretion has an associated code that is displayed alongside it. Use this table to match the discretion with the section of the CAO flight and duty regulations to assist with understanding why the discretion is being displayed. 

CodeDescriptionCAO 48.1 Instrument 2019 Reference
1101Maximum standby time has been exceededAppendix 3, Section 6.1

Appendix 4, Section 6.1

Appendix 6, Section 5.1
1201Max number of sectors has been exceededAppendix 3, Section 2.1

Appendix 4B, Section 1.1

Appendix 5, Section 1.1
1401Less than X non-consecutive period hours off in preceding X daysAppendix 1, Section 4.2 (b)

Appendix 3, Section 8.6

Appendix 4, Section 8.6

Appendix 4A, Section 5.3

Appendix 6, Section 7.3
1402Less than X non-consecutive period hours off in preceding X daysAppendix 1, Section 4.2 (b)

Appendix 3, Section 8.6

Appendix 4, Section 8.6

Appendix 4A, Section 5.3

Appendix 6, Section 7.3
1403Less than X consecutive hours off in preceding X hours, including X nightsAppendix 1, Section 4.2 (a)

Appendix 3, Section 8.5

Appendix 4, Section 8.5

Appendix 4A, Section 5.3

Appendix 4B, Section 5.4 (a),(b)

Appendix 5, Section 5.2 (a),(b)

Appendix 5A, Section 4.2

Appendix 6, Section 7.2
1404Less than X consecutive hours off in preceding X hours, including X nightsAppendix 1, Section 4.2 (a)

Appendix 3, Section 8.5

Appendix 4, Section 8.5

Appendix 4A, Section 5.3

Appendix 4B, Section 5.4 (a),(b)

Appendix 5, Section 5.2 (a),(b)

Appendix 5A, Section 4.2

Appendix 6, Section 7.2
1501Duty start time within X hours from previous duty finish timeAppendix 1, Section 4.1

Appendix 3, Section 8.1 (a)

Appendix 4, Section 8.1 (a)

Appendix 4A, Section 5.1

Appendix 4B, Section 5.1 (a)

Appendix 5, Section 5.1 (a)

Appendix 5A, Section 4.1

Appendix 6, Section 7.1
1502Duty start time within X hours from previous duty finish timeAppendix 3, Section 8.3

Appendix 4, Section 8.3

Appendix 4B, Section 5.2
1503Duty start time within X hours of previous dutyAppendix 3, Section 8.1 (b)

Appendix 4, Section 8.1 (b)

Appendix 4A, Section 5.1

Appendix 4B, Section 5.1 (a)

Appendix 5, Section 5.1 (a)

Appendix 5A, Section 4.1

Appendix 6, Section 7.1
1504Duty start time before previous duty ‘next earliest start’ timeAppendix 3, Section 8.2

Appendix 4, Section 8.1, 8.2

Appendix 4B, Section 5.1

Appendix 5, Section 5.1

Appendix 6, Section 7.1
1602Duty exceeds X non-consecutive nights in X hoursAppendix 5, Section 1.6
1701Duty exceeds maximum of X consecutive WOCL/Early startsAppendix 3, Section 11.1

Appendix 4, Section 11.1

Appendix 6, Section 10.1
1702Duty exceeds X consecutive WOCL starts without a local night (8 hours, covering 22:00-05:00)Appendix 3, Section 11.2

Appendix 4, Section 11.2

Appendix 6, Section 10.2
1801Duty time last 7 days may not exceed X hoursAppendix 3, Section 10.1

Appendix 4, Section 10.1

Appendix 4A, Section 7.1

Appendix 6, Section 9.1
1802Duty time last 14 days may not exceed X hoursAppendix 3, Section 10.2

Appendix 4, Section 10.2

Appendix 4A, Section 7.2

Appendix 4B, Section 7.2

Appendix 6, Section 9.2
1803Duty time last 7 days may not exceed X hours, due to reduced cumulative dutyAppendix 4B, Section 7.1
1804Duty time last 7 days may not exceed X hours, due to reduced cumulative dutyAppendix 4B, Section 8.2
1901Duration between duty rest finish time and duty finish time may not exceed X hoursAppendix 3, Section 3.5

Appendix 4, Section 3.5

Appendix 4A, Section 3.4

Appendix 5, Section 2.3

Appendix 6, Section 3.5
1902FDP may not exceed X hours (max increased and extended FDP)Appendix 4B, Section 1.3 (d)

Appendix 5, Section 1.4 (d)
1903FDP may not exceed X hours (max increased FDP)Appendix 4B, Section 1.2

Appendix 5, Section 1.3
1904FDP may not exceed X hours (max FDP with extension)Appendix 3, Section 5.3

Appendix 4, Section 5.3

Appendix 6, Section 4.3
1905FDP may not exceed X hoursAppendix 3, Section 2.1

Appendix 4, Section 2.1

Appendix 4A, Section 2.1

Appendix 4B, Section 1.1

Appendix 5, Section 1.1

Appendix 5A, Section 2.2

Appendix 6, Section 2.1
1906Max FDP + completed standby exceeds X hoursAppendix 3, Section 6.3
1907Duty duration may not exceed X hoursAppendix 3, Section 2.1

Appendix 4, Section 2.1

Appendix 4A, Section 2.1

Appendix 4B, Section 1.1

Appendix 5, Section 1.1

Appendix 5A, Section 2.2

Appendix 6, Section 2.1
2101FDP may only be increased if prior off duty is at least X hoursAppendix 4B, Section 1.3 (b)

Appendix 5, Section 1.4 (b)
2102FDP may only be increased if future off duty is at least X hoursAppendix 4B, Section 1.3 (c)

Appendix 5, Section 1.4 (c)
2103Maximum allowed number X of increased FDP’s within the previous X hours has been exceededAppendix 4B, Section 1.3 (a)

Appendix 5, Section 1.4 (c)
2201Today’s flight time may not exceed X hoursAppendix 1, Section 2.7

Appendix 3, Section 2.2

Appendix 4, Section 2.1

Appendix 4A, Section 2.1

Appendix 4B, Section 1.1

Appendix 5, Section 1.1

Appendix 5A, Section 2.1

Appendix 6, Section 2.2
2202Flight time last X days may not exceed X hoursAppendix 1, Section 5

Appendix 3, Section 9

Appendix 4, Section 9

Appendix 4A, Section 6

Appendix 4B, Section 6

Appendix 5, Section 6

Appendix 5A, Section 5

Appendix 6, Section 8
2301A minimum of X consecutive hours off in X hours is required if X increased FDP’s are conductedAppendix 4B, Section 5.3 (b)

Appendix 5, Section 5.3
2302A minimum of X consecutive hours off in X hours is required if X late night FDP’s are conductedAppendix 4B, Section 5.3 (a)

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