The common characteristics to these rosters are obviously the long flight duration (between 16 and 18 hours) and the crew composition (double crew instead of augmented crew for long haul flight). Therefore, there are new possibilities of in-flight rest management for each crew in terms of the amount of opportunities and duration. The landing crew may have the choice between these different possibilities according to their feeling.
 
The timing of the outbound flights and the amount of time zones are the main differences between SIN-LAX and SIN-JFK routes. Consequently there slight differences in the recommendation for the outbound flight and layover rest management. 
 
 
 
 
 
The recommendations are based on the following criteria :
. all crews are based in SIN

. the crews are fully adapted to SIN time before departure

. the crews at the controls for take off and landing are the same and are known beforehand (before the flights)

. the crew at the controls for landing may have the choice of in-flight rest period (in terms of timing and amount of rest periods) according to :

. the duration and the quality of their sleep before flight

. the time since sleep or nap  
 
 

5.2. DETAILED REVIEW OF RECOMMENDATIONS

5.2.1. SIN-LAX-SIN

5.2.1.1. THE DAY BEFORE THE OUTWARD FLIGHT 

Recommendations depend on the timing of in-flight rest period:
– first part or second part of the flight. 
 

If your main rest period is planned in :
 
- the first part of the flight :
. take light meal in the evening

. go to bed as early as possible 

. the following day, normal activity

. avoid coffee or tea after 12h

. do not take a nap 

- the second part of the flight:
. take a light meal in the evening

. avoid coffee and tea after 16h

. go to bed at your normal time

. avoid getting up early 

. if possible, take a nap before leaving for the airport

. appropriate time for coffee or tea if needed

. if not, relax and take a nap during home/hotel airport transfers, even a very short one

5.2.1.2. DURING THE OUTWARD FLIGHT 

The second part of flight is more favorable to sleep because it corresponds to the normal home time for sleep. The landing crew should have its main sleep period in the second part of the flight. If there are 4 equal rest periods of 4 hours each, nobody will have enough sleep: The “excitement” of departure may prevent sleep in the first part of the flight therefore sleep inertia will probably be high after the second rest period. On the contrary, if there is a long rest period in the second part of the flight, the probability to sleep 4 to 5 hours is high and the level of alertness of landing crew will be appropriate. 
　
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