cad 371 module 5 v1.1

CAD-371A Generic Interpretation

Understanding CAD-371

Flight and Duty Time Limitations and Rest Requirements.

Version 1.1

Copyright © 2012-2015 Understanding CAD-371 – A Generic Interpretation All rights reserved.

Disclaimer

The documentation is provided “AS IS” and is solely intended to provide a general understanding of the author’s interpretation of the new CAD 371 as amended on 01-May-2010.

The author makes no representations and disclaims any and all responsibility for the completeness or accuracy of the documentation.

The author reserves the right, at his discretion, to change or modify the documentation as deemed appropriate.

Copyright © 2012-2015, Understanding CAD 371 – A Generic Interpretation. All rights reserved.


Module 5:

Application of Regulations:All Crew Complements


CAD-371.14Aircraft commander’s discretion

to extend a flying duty period:Before Take-off:

• The maximum anticipated extension for standard flight crew and standard cabin crew is 3 hours (3:00) above the scheduled FDP limits in CAD-371.11.1 or CAD-371.28.2.

• The maximum anticipated extension for augmented flight crew and augmented cabin crew is 2 hours (2:00) above the scheduled FDP limits in CAD-371.11.3, CAD-371.12 (LRO) or CAD-371.13(ULR).

• The maximum extension for Standard flight crew and Standard cabin crew extended by Split duty is 2 hours (2:00) above the scheduled FDP limits in CAD-371.11.3.2 1 or CAD-371.28.3.1.

After Take-off:• May continue as long as necessary to land at the next

Destination / Alternate Aerodrome.


Example:

Maximum Anticipated FDP Extensions in RED.

CAD-371.14Aircraft commander’s discretion

to extend a flying duty period:

Report

800

ELAPSED MAX MAX EXT

FLTDEP

ARR

BLOC

KFDP

DUTY

SK FDP

SK FDP

CMD EXT

1BRU

900 NCE 1045 145 245 245 1300 1400 1500

2NCE

1115

BRU 1300 145 500 500 1300 1400 1500

3BRU

1330

FRA 1430 100 630 630 1230 1330 1430

4 FRA150

0BRU 1600 100 800 800 1200 1300 1400

Acclimated Standard Crew

Total 530 800 Release 1630 2030 2130 2230

Duty Time 930 1230 1330 1430Required Rest

After DP1200 1230 1530 1430


CAD-371.23 / CAD-371.24Absolute Limits on Flying / Duty Hours

Cumulative Flight Time :• 100 hours of flight time in any 28 consecutive days; • 900 hours of flight time in any 12 consecutive calendar months.

Cumulative Duty Time:• 55 Scheduled duty hours in any 7 consecutive days;• 60 Actual duty hours in any 7 consecutive days;• 95 duty hours in any 14 consecutive days; • 190 duty hours in any 28 consecutive days;

Lookback is from arrival time of leg or Midnight.

Lookback is from release time of duty or Midnight.

Two Checks when Leg/Duty crosses Midnight (Base Time).


CAD-371.20 Rest PeriodGeneral

• A Duty Cycle that contains more than 2 LRO FDPs, requires a Physiological rest between any tow consecutive LRO’s.

• A Disruptive Rest Period (DRP) is a rest period between 18:00 and 30:00 and the CM is not provided a Physiological Rest.

• If a CM has 3 consecutive DRP’s or has 4 DRP’s in a 14 day span, any subsequent EXB must be at least 34:00 during the next 14 calendar days.


Required Rest

Greater of: Length Of Preceding Duty Period 14:00 LNR

o Includes 8:00 Sleep opportunity between 22:00 and 08:00

CAD371.20 Rest PeriodNormal Rest

Is required when the Time Zone difference of the preceding Duty Period Start and End is less than 6 hours.


Length of Preceding Duty Required Rest Before Reduced Rest Before

<= 12:00 12:00

11:00Must provide

10:00 in suitable accommodation

> 12:00 Length Of Preceding Duty Period Not permitted

CAD371.20 Rest PeriodPhysiological Rest

Is required when the Time Zone difference of the preceding Duty Period Start and End is 6 hours or more.

LNR provides for a 8:00 Sleep opportunity between 22:00 and 08:00.


Condition Required Rest

<= 72:00 since Start of FDP

where CM first becomes Un-Acclimated

Greater of: Length Of Preceding Duty Period 14:00 LNR (Base Time)

> 72:00 since Start of FDP


Greater of: Length Of Preceding Duty Period 14:00 LNR (Local Time)

CAD371.20 Rest PeriodULR Rest

• Before the start of a duty cycle that contains a ULR, the CM must be provided a duty free period that includes 2 DDO’s.

• Before the start of a ULR, the CM must be provided a rest period in compliance with the conditions in the following table:


Condition Required Rest before

Acclimated LNR (Base Time)

<= 72:00 since Start of FDP


LNR (Base Time)

> 72:00 since Start of FDP


LNR (Local Time)

• After the completion of a ULR, the CM must be provided a rest period that includes 2 LNR. o Maybe reduced under CAD-371.14.2 to 1 LNR

• Upon completion of a Duty Cycle that contains a ULR, the CM will be provided a recovery period of 4 DDO’s.

Where 6 or more time zones were crossed during the preceding duty cycle, then the first DDO within the recovery period shall not count toward meeting the 7 DDOs in 28 days requirement.

CAD-371.21Recovery Period:


Duty Cycle Flight Crew A series of duty periods undertaken between DDOs.

Recovery Period

A period free of duty following a duty cycle of length greater than 48 hours during which the crew member became un-acclimatised. A rest period and DDO(s) may form part of a recovery period.

Length ofDuty Cycle

Maximum Time Difference from Home Base Time during the Duty CycleMore than 3 hrs but

less than 5 hrs5 hrs or more but

less than 6 hrs6 hrs or more but

less than 7 hrs 7 hrs or more

48+ to 72 1 DDO 1 DDO 2 DDOs 2 DDOs72+ to 96 3 DDOs 3 DDOs 3 DDOs 3 DDOs

96+ to 120 3 DDOs 4 DDOs 4 DDOs 4 DDOs120+ to 144 3 DDOs 4 DDOs 5 DDOs 5 DDOs

144+ 3 DDOs 4 DDOs 5 DDOs 6 DDOs

1 2 3 4 5 6 7 8 9

7 day lookback from end of Duty Period- illegal

Duty Period

Rest Period

FDP

From the scheduled release of a duty period, looking back 7 calendar days, a DDO or EXB must be found within the same 7 calendar day period.


LNR

DDO or EXB

7 day lookback from end of Duty Period - legal

CAD-371.22Domestic Day Off (DDO)

LNR


1 2 3 4 5 6 7 8 9


Duty Period

Rest Period

FDP

From the release of a duty period, looking back 14 calendar days, a two days free of duty which includes three local nights rest (LNR)

must be found within the same 14 calendar day period.


2DDO

14 day lookback from end of Duty Period - legal

CAD-371.22Two Domestic Days Off

10 11 12 13 14 15

LNR

16

DDO


CAD-371.227 and 24 DDO’s

A Crew member must be able to lookback 28 calendar days and find a total of 7 DDO’s.

A Crew member must be able to lookback 84 calendar days and find a total of 24 DDO’s.


CAD-371.8.4Delayed Reporting Time

Amount of Notification FDP Limits Based ON FDP

Start Time

>= 10 hours Revised FDP Start Revised FDP Start

>= 4 hours and < 10 hours

Is the more limiting of: Original FDP Start Revised FDP Start

Original FDP Start Time plus 4:00

< 4 hours Original FDP Start Original FDP Start


• In the event of a second or any subsequent delays, the maximum FDP and FDP start time, will both remain unchanged from the initially revised FDP / FDP start time as presented in the table above.

• When an operator informs a crew member before leaving the place of rest of a delay in reporting time of 10 hours or more ahead, and that crew member is not further disturbed by the operator until a mutually agreed hour, then that elapsed time is classed as a rest period.

CAD-371.19 Airport Standby (ASB)

Airport Standby (ASB)

Report of ASB

Arrive Time

FDP

Report of FDP

Duty Time

Airport Standby (ASB)

Report of ASB

Duty TimeRelease of ASB

Rest Period

ASB that does not lead to an FDP.

ASB that leads to an FDP.

1. FDP is considered to start at start of ASB.

a) limited to the FDP limits as defined in CAD-371.11.1, 11.3.1, 12.1, 13.3 (as appropriate)

2. A CM assigned to an ASB that does not lead to a FDP must be released into a rest period no less than 12:00.

3. The maximum time a CM may serve on ASB is 12:00.

4. All time on ASB/Combined ASB & FDP counts towards the Cumulative Duty Limitations under CAD-371.24.3.


CAD-371.19 Standby (SBY)

Standby (SBY)

Start of SBY

Arrive Time

FDP

Report of FDP

SBYTime

Standby (SBY)

Start of SBY SBY Time

Release of SBY

Rest Period

SBY that does not lead to an FDP. SBY that leads to an FDP.

1. A CM assigned to an SBY that does not lead to a FDP must be released into a rest period no less than 12:00.2. The maximum time a CM may serve on SBY is 12:00.3. FDP is considered to start at start of FDP when a CM is assigned to report for an FDP.4. The FDP assigned to a CM on SBY for less than 6:00 will be:

a) limited to the FDP limits as defined in CAD-371.11.1, 11.3.1, 12.1, 13.3 (as appropriate) b) FDP starts at report time of the FDP

5. When a CM is assigned to begin a FDP after the scheduled end of a SBY with less than 10:00 notice, the combined SBY time and FDP time may not exceed 23:00.

6. Required rest after a SBY assigned to FDP with less than 10:00 notice:a) For a SBY that does not overlap any portion of the time from 22:00 to 08:00, the rest period following a combined SBY / FDP

shall be no less than the Assigned Duty time plus one half of the time on SBY, or the required rest in CAD-371.20, whichever is greater.

b) For a SBY which overlaps any portion of the time from 22:00 to 08:00, the rest is the same as found in CAD-371.20.7. The required rest before assignment to a series of FDP’s with a ULR FDP must meet the requirements in CAD-371.20.4


CAD-371.19 - Contactable

1. The minimum time from the time a CM is notified until the CM is required to report for a FDP/ASB/SBY is 10:00.

2. The time a CM serves on CP is not regarded as Rest for the purposes of Day off requirements and rest requirements.


CAD-371A Generic Interpretation

Understanding CAD-371

Flight and Duty Time Limitations and Rest Requirements.

Version 1.1


cad 371 module 5 v1.1

Education

understanding cad

new cad

scheduled duty hours

hours of flight time

cumulative duty time

release time of duty

generic interpretation

actual duty hours