???? Conventions ??????? ???? ????? functioning ???????? ??? ????? short. ???? ??? ????????? obligations ??? ??? ???? ????? upkeep equipment, including schedules ???????. Aids ??? ????????? ?? minimizing disputes ??? sides and clarifying responsibilities ?? party ?????? ?? guaranteeing performance undertakings ????? ????? ???? ????? ??????

??? ?????? ????? ?????? ????? ?????? ??? ??? ???????? ?? ???? ????? here ????? ? ?????. ?????? ??? ?????? ?? ??????? ???? ?? ????? ??????. ??? ??? ?????? ??????? ?? ???? ?????? ????? ????? ????????. ?? ??????? ?? ???? ??????? ?????? ? (????) ???? ???????? ?? ???. ??? ????? ????? ???? ????? ????? ? ?????? ???? ?? ??? ???? ?????. ????? ?