A pilot for US Airways Express pleaded guilty in federal court Thursday for selling a substance over the Internet to help drug users defeat drug tests, including truck drivers and other transportation employees
, according to reports by the Associated Press.

Stephen Sharp, 41, pleaded guilty before U.S. District Judge David S. Cercone to running a web site, www.yourintheclear.com, where employees could purchase a drug test powder drink mix for the purpose of defeating federal, and federally regulated, employment drug urine tests overseen by the Substance Abuse and Mental Health Services Administration.

"Drug testing of employees in national security and public safety positions is overseen by the federal government to ensure the safety and security of the public," said Robert S. Cessar, acting U.S. attorney. "The fact that Stephen Sharp is a pilot further underscores the importance of this type of prosecution."

From Nov. 1, 2006, through May 7, 2008, Sharp, from Daytona Beach, Fla., claimed the drink mix product worked like magic and "abracadabra."

"'Your In The Clear' drug test drink mix helps with instant detoxification of your body while your body contains those harmful trace marijuana, cocaine, etc., detectable metabolites," the web site said. "Get the help you need to pass your drug test quickly and safely with no gimmicks!"

Judge Cercone scheduled Sharp's sentencing for Sept. 3, and he could receive up to five years in prison, a $250,000 fine, or both.