Small Aircraft
Air Traffic Control Fully Certified
Communication Breakdown; Confusion; Situational Awareness
Deviation / Discrepancy - Procedural Clearance; Ground Incursion Runway
Air Traffic Control Issued Advisory / Alert
Human Factors
An aircraft was taxiing from an FBO to the hangars on the other side of Runway 33. He was issued and read back hold short instructions. Approaching the runway edge line; he was issued hold short instructions again and read back 'ROGER' and then proceeded to cross. Perhaps better communication procedures on the part of the pilot.
A pilot crossed LOU Runway 33 after ATC cleared him twice to hold short. He acknowledged and then crossed Runway 33 anyway.