Narrative:

While conducting training in a citation the aircraft was cleared for takeoff and told to fly runway heading. As the aircraft reached V1 speed the crew noticed a tail dragger appear on the runway from the left to right as the aircraft is rotated. As the aircraft crossed underneath the citation; the instructor pilot keyed the microphone to the local controller advising that an aircraft just crossed the path of the departing citation. The local controller advised 'sorry.' had the takeoff roll been any greater in distance; a collision between the two aircraft would have occurred with the citation at maximum speed.

Google
 

Original NASA ASRS Text

Title: Citation departing PRC described conflict event; reaching V1 speed a light aircraft was observed crossing the departure runway down field.

Narrative: While conducting training in a Citation the aircraft was cleared for takeoff and told to fly runway heading. As the aircraft reached V1 speed the crew noticed a Tail Dragger appear on the runway from the left to right as the aircraft is rotated. As the aircraft crossed underneath the Citation; the Instructor Pilot keyed the MIKE to the Local Controller advising that an aircraft just crossed the path of the departing Citation. The Local Controller advised 'Sorry.' Had the takeoff roll been any greater in distance; a collision between the two aircraft would have occurred with the Citation at maximum speed.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.