Avemco Insurance Company, a leading pleasure and business general aviation insurer in the United States, has been insuring planes and pilots since 1961. Headquartered in Frederick, Maryland, Avemco is rated A++ (Superior) by A. M. Best Company and AA (Very Strong) by Standard & Poor's. Avemco is a subsidiary of HCC Insurance Holdings, Inc. (NYSE: HCC), a leading international specialty insurance group.