sentences:  The aircraft was re-configured in the airline's contemporary, 265-seat, two-class scheduled layout at the end of the summer period.It replaced Boeing 707s on two of BCal's three weekly South Atlantic schedules to Brazil, Argentina and Chile, as well as on one of the company's two weekly mid-Atlantic schedules to Venezuela, Colombia and Peru from the beginning of the 1977/78 winter timetable period.The DC-10's superior operating economics compared with the 707 enabled BCal to operate the aircraft non-stop from Buenos Aires to Gatwick with a viable payload.