Also, by the end of April, Cirrus Design had increased the production rate of its 200-horsepower SR20 and 310-horsepower SR22 to two aircraft per business day. By early April, the company had produced 343 airplanes and had a backlog in excess of 500 airplanes. The production mix of SR22s to SR20s is running about two to one, Klapmeier reported. He acknowledged that the ratio "irritates some of our SR20 owners, but we're not enjoying a positive cash flow yet. If we went out of business that wouldn't make people happy, either." Despite the lack of positive cash flow, Klapmeier said, "We're no longer worrying about meeting the payroll on Fridays and I'm confident that we'll develop another airplane."