The Denver airport trespasser who was dismembered by a jet engine after he calmly stepped in front of a Frontier flight had a dark criminal past, The Post can reveal. Michael Mott , 41, racked up over 20 arrests in Colorado dating back to 2002 — including for attempted murder. Michael Mott, who was dismembered by a Frontier Airlines jet engine during a twisted suicide mission at Denver International Airport, had a dark criminal past. Montezuma County Sheriff's Office Mott racked up over 20 arrests in Colorado dating back to 2002. Colorado Springs Police Department One of his mug shots show him with a bandaid on his forehead and a gash on his neck. His most recent arrest was for felony trespassing just one month before he jumped the fence at Denver International in an attempt suicide mission. Mott got sucked into one of the engines of the Airbus A-321neo and his cause of death was determined to be multiple blunt and sharp force injuries, officials said Tuesday.…