At 15:16 CST, a Maule M7-235 ground looped during landing at the Iuka Airport. The pilot was not injured. The pilot said that, while he was landing on runway 18, the right rudder pedal went to the floor. The aircraft ground looped and received major structural damage to the fuselage where the right main gear attaches. Inspectors found the rudder cable had pulled loose from the nicopress fitting and sleeve. The aircraft tach showed 18.5 hours and the Hobbs meter indicated 21.3 hours total time since new. The rudder cable and nicopress fitting were removed for further examination.