Prosecutors say 60-year-old Robert Hedrick of Brownsville faces charges of attempted sexual exploitation of children, transfer of obscene materials to a minor and distribution and possession of child pornography.
Investigators say undercover agents in Louisiana and Wisconsin posing as minors had contact with Hedrick online.
Hedrick has remained in federal custody since his arrest in July. Defense attorney Ed Stapleton says he expected the indictment, which was returned Tuesday, but hasn't had an opportunity to review the evidence against his client.
Hedrick last fall announced the opening of Pan American Airways, an air cargo carrier that would operate 70 flights per month between Brownsville and Latin American cities.