Dale Moss has been appointed chief operating officer (COO) of Jet Airways.According to a release issued by Jet to the BSE today, Moss, in his last assignment, served as director of worldwide sales for British Airways."Moss has over 20 years of international experience in the airline business," the release added.Patni Computer Systems has designated Mrinal Sattawala as COO with effect from May 4, 2006, and will have overall responsibility for operations of the business units of the company. According to a release issued by Patni to the BSE today, Sattawala will report to Naren Patni, chairman and CEO of the company.