A Cincinnati man's disruptive behavior aboard a Frontier Airlines flight has landed him a 30-month prison sentence. William Allen Liebisch, 43, was convicted of interfering with the performance of duties of a flight crew after wielding a box cutter on a flight bound for Tampa, Florida, and threatening to stab someone mid-air. The incident, which took place on November 11, 2022, forced the pilot to make an emergency landing in Atlanta.
The chaos unfolded when Liebisch, after passing through the TSA security checkpoint at the Cincinnati airport, managed to smuggle a spare blade onto the plane, which he later inserted into the handle of a box cutter confiscated by TSA officers. His alarming actions and comments prompted the crew to take precautionary measures, including asking two male passengers to help restrain him, according to the U.S. Attorney's Office for the Northern District of Georgia.
U.S. Attorney Ryan K. Buchanan expressed relief following the sentencing, stating, “The flying public deserves to travel in peace without fear that a fellow passenger will create a violent disturbance,” which was echoed by FBI Atlanta Special Agent in Charge Keri Farley, who commended the passengers for their brave intervention. Joseph Harris, Special Agent-in-Charge for the Department of Transportation Office of Inspector General, Southern Region, highlighted the importance of safety aboard commercial aircraft and the continued efforts to prosecute those who disrupt airline operations, as reported by the U.S. Attorney's Office.
While approaching the Atlanta airport for an emergency landing, Liebisch lunged toward a flight attendant with the weapon in hand. His attempt was thwarted by a quick-acting passenger who tackled him before law enforcement officials rushed onboard to subdue and arrest him. The fallout from Liebisch's disturbance, arrest, and subsequent baggage re-inspection protocols led to an overnight delay for the flight to Tampa due to crew duty restrictions, as reported by the U.S. Attorney's Office press release.
Liebisch pleaded guilty to the charges on December 14, 2023, and in addition to his prison sentence, he will be subject to three years of supervised release. The case was investigated by the Federal Bureau of Investigation and the Department of Transportation, with Assistant United States Attorney Paul R. Jones leading the prosecution.
