WICHITA, Kan. (AP) — A Kansas man who plotted a suicide bomb attack at a Wichita airport is expected to get 20 years in prison under the terms of a plea deal.

Terry L. Loewen pleaded guilty in June to attempting to use a weapon of mass destruction. The 60-year-old Wichita man will return to federal court Monday for sentencing. If the judge rejects the proposed sentence, Loewen will be allowed to withdraw his plea.

The avionics technician was arrested during an undercover FBI operation in December 2013 when he tried to bring a van filled with inert explosives onto the tarmac at Mid-Continent Airport.

The FBI said he was Facebook friend of an individual who regularly posted information supporting violent jihad, or holy war.