He was scheduled for the same day DH. The problem was that the DH FLT # was changed due to the longer day and before he boarded the FLT home he was already beyond 16 hours of duty. His chief said that he had to be on the FLT because it was legal and we need you back in ORD.

He had reserve duty the next day, I am sure his reserve duty in time changed but that should be irrelevant. He still departed on a scheduled (not elected) beyond the 16 hour period.

See my issue? Regardless, MESA SUX!!!!!!!!!