Aircraft Flight Operation Regulations Article 38-3

A series of duty periods accumulated prior to the commencement of flight duty shall be taken as part of flight duty periods.The summation of sequential duty periods accumulated after the crew member being released from flight duty, together with flight duty period, may not exceed the flight duty periods limitations set forth in Article 38 and 37-1. However, the positioning time after a flight duty shall not be included in the flight duty period limits but shall be counted as duty period.