25 A 1 a - The company and the Association Scheduling Committee shall jointly construct all lines and pairings so as to assure safety of flight (i.e., no redeye-plus-one parings and no more than one check-in per calendar day). Redeye-plus-one pairings have any duty period portion within the hours of 0200 and 0459 local domicile time and after the first flight leg scheduled to depart after 0300 local domicile time.