Light Transport; Low Wing; 2 Turbojet Eng
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 16.0
Situational Awareness; Communication Breakdown
ATC Issue All Types; Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Clearance; Ground Incursion Runway
Air Traffic Control Issued New Clearance; Flight Crew Became Reoriented; Flight Crew Returned To Clearance; Flight Crew Requested ATC Assistance / Clarification
Human Factors; Airport; Weather
I was working local and ground combined. Weather at the airport was IFR with no aircraft visibility. RVR for Runway 18 was 2000 feet. Aircraft were requesting this runway for departure. Aircraft X requested taxi to runway. I taxied Aircraft X via Taxiway N to hold short of the runway. While Aircraft X was in the taxi a previous runway arrival was clear of the runway. I cleared Aircraft Y for takeoff. Aircraft X advised holding short of the runway. I cleared Aircraft X to cross the runway while Aircraft Y was departing. Aircraft X advised Aircraft Y passed over him and that his front gear was just past the hold short lines for the runway.I have no recommendation at this time. I am still trying to decipher the event and why it happened with my longevity and experience.
We were taxing westbound. Ground Control cleared our aircraft to cross the runway. The controller was working both tower and ground. As I approached the runway in fog my co-pilot yelled out. I brought the airplane to a stop about three feet into the runway. As we looked right I could see an [aircraft] passing overhead from right to left; about 30 feet over our aircraft. We alerted the ground controller to the runway incursion and continued on with our mission without further delay once he recleared our runway crossing.We have arranged a cordial visit to the Control Tower to see how we as pilots can better work with the controllers to prevent these mistakes in the future.
A Controller cleared an aircraft for takeoff at the same time they cleared an aircraft to cross the runway at an intersection. The First Officer saw the departing aircraft and told the Captain to stop. The taxiing aircraft was about three feet past the white runway edge line.