sentences:  Although the introduction of the DC-10 resulted in a huge increase in BCal's long-haul passenger and cargo capacity, the actual loads exceeded the airline's forecasts and helped it grow its traffic volumes on its scheduled services to West Africa and South America.BCal was so pleased with the DC-10's performance that it decided to convert both of the options it had taken when placing the original order for two aircraft during 1976 into firm orders for delivery in autumn 1978 and spring 1979 respectively.However, a subsequent strike at the manufacturer's plant meant that McDonnell Douglas could not honour its delivery schedules.