SALT LAKE CITY — A sex offender with a stolen boarding pass got through airport security in Salt Lake City and checked in at a gate for a flight to California before he was caught earlier this month, authorities have disclosed. Michael Salata, 61, was arrested on Nov. 5 after boarding the Southwest Airlines flight, according to jail records obtained Thursday. He had grabbed a boarding pass that a woman accidently left at a check-in kiosk and used it to get through a Transportation Security Administration checkpoint, said Craig Vargo, chief of airport police. “He tried to make it seem like it was a mistake, that the boarding pass printed incorrectly, or that he grabbed the wrong boarding pass,” Vargo told the Deseret News, a Salt Lake City newspaper that first reported the story. It’s unclear why the incident was not disclosed by authorities until 20 days after it happened. The news surfaced during one of the busiest travel times of the year and while the country is on alert after recent terror attacks abroad.