"(e) A crew member shall be subject to appropriate requirements on the consumption of alcohol which shall be established by the operator and acceptable by the Authority, and which shall not be less restrictive than the following:

1. no alcohol shall be consumed less than eight hours prior to the specified reporting time for flight duty or the commencementof standby;

2. the blood alcohol level shall not exceed 0,2 promille at the start of a flight duty period;

3. no alcohol shall be consumed during the flight duty period or whilst on standby."