Narrative:

I was working local and ground. I instructed small aircraft X to cross runway 24 and hold short of runway 30. I had cleared another small aircraft Y for a touch and go on runway 30. Small aircraft X crossed runway 30 in front of the touch and go aircraft. Pilots need to listen more carefully. Pilots also need to watch. Even if aircraft thinks he is cleared onto runway, he should look both ways.

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Original NASA ASRS Text

Title: SMA X UNAUTH RWY ENTRY NON ADHERENCE TO ATC INSTRUCTION HAD LTSS FROM SMA Y. RWY INCURSION.

Narrative: I WAS WORKING LCL AND GND. I INSTRUCTED SMA X TO CROSS RWY 24 AND HOLD SHORT OF RWY 30. I HAD CLRED ANOTHER SMA Y FOR A TOUCH AND GO ON RWY 30. SMA X CROSSED RWY 30 IN FRONT OF THE TOUCH AND GO ACFT. PLTS NEED TO LISTEN MORE CAREFULLY. PLTS ALSO NEED TO WATCH. EVEN IF ACFT THINKS HE IS CLRED ONTO RWY, HE SHOULD LOOK BOTH WAYS.

Data retrieved from NASA's ASRS site as of July 2007 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.