Alert Management : While undertaking controlled rest, establish procedures to maintain alertness of non-resting flight crew members. The Captain shall inform the CCIC of the intention of the flight crew member to take controlled rest, and of the time of the end of that rest. The CCIC must establish a frequent check on the Flight crew by means of the interphone system. Preferably, and in order not to disturb the resting crew member, the non-resting Flight crew member should call the Cabin crew approximately every 20 minutes (night) or 30 minutes (day). The CCIC shall call the non-resting Flight crew member or shall make a physical check if no communication has been established in the given time.
But somebody said that if you obey all the rules you miss all the fun
