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Fatigue Risk Management Systems - appendix 5, Q4

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rubber created the topic: Fatigue Risk Management Systems - appendix 5, Q4

Fatigue Risk Management Systems - appendix 5
p135 Q.4

You have been rostered to an FDP commencing at 1230 LMT with four hours split duty rest with sleeping accommodation commencing at 1530 LMT. The operation is a single pilot operation. The latest time at which this FDP must be completed is -
answer (b) 0300 LMT on the next day.

I query this answer but only as I think an error may exist in the solution provided.
It gives the normal FDP limit for a 1530 LMT start is 10 hours 30 minutes.
However, in the question, 1530 LMT is the start of rest time, whereas 1230 LMT is the start of the FDP.

FDP limit for 1230 LMT is given as 11 hours.
This may be increased by the split-duty rest period of 4 hours (clause 2.1) to 15 hours*.
Therefore the latest time at which you must complete the FDP is 1230 + 15 hours = 0330 LMT the next day

*My concern is clause 1.3 - "...the FDP limit for an FCM may be increased to not more than the following limits..."
(a) for a single-pilot operation - 12 hours.

Are we allowed to extend the FDP limit by split duty beyond 12 hours, as shown in this question?
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MissSoph replied the topic: Fatigue Risk Management Systems - appendix 5, Q4

Can anyone show how they managed to calculate this answer.... we calculated the same answer...0330... maybe have to look deeper into 3.1....??
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Stuart Tait replied the topic: Fatigue Risk Management Systems - appendix 5, Q4

You overlooked this sentence

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MissSoph replied the topic: Fatigue Risk Management Systems - appendix 5, Q4

Thanks, I saw that. This is how I’m interpreting it.
FDP starts at 1230. Max FDP (1.2 table 1.1) is 11 hours single pilot.
He goes to split duty at 1530 for 4 hours, comes back at 1930. Coz of sleep accomodation (2.1) means that 11 hours from table 1.1 can have 4 hours added to it, bringing the FDP to 15 hours (0330).
Para 2.3 limits the duty to no more than 6 hours after recommencement of duty(1930hrs + 6 =0130)
But he says the answer is 0300. So confusing.....I can’t work out how the answer is 0300?
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Stuart Tait replied the topic: Fatigue Risk Management Systems - appendix 5, Q4

No the answer is 01.30

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MissSoph replied the topic: Fatigue Risk Management Systems - appendix 5, Q4

Thanks so much Stuart.... we were just referencing the answer given in the original question to you.. That’s why we were soo stumped... thanks again...
We ended up with that answer...
I have a study buddy with me at the moment ..
Thanks again
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rubber replied the topic: Fatigue Risk Management Systems - appendix 5, Q4

Thank you for the clarification.

The answer given in my copy of the CPL text is wrong, but this is not listed yet in the CPL Airlaw Updates & Errata page.
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rubber replied the topic: Fatigue Risk Management Systems - appendix 5, Q4

In this scenario, is there anything that prohibits the PIC from extending the FDP by two hours in accord with clause 3.1?
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1035086 replied the topic: Fatigue Risk Management Systems - appendix 5, Q4

Dear Stuart,

Good day. Can check with you because in CAO 48.1 para 2.3, it says:
"Any portion of an FDP .... must be no longer than the sum of 6 hours and any permitted extension under clause 3"

According to the textbook's interpretation, it is just taken as it cannot be more 6 hours.
How about the permitted extension of clause 3?

I interpret it as the sum of 1) 6 hours and 3) any permitted extension under clause 3.

Is that right? Thank you so much.
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