Narrative:

I feel that after touchdown and during rollout a gust of wind came from the east giving me a quartering tailwind against my rudder. This caused the nose of my plane to head south into the ditch approximately 12 ft from and parallel to the runway.

Google
 

Original NASA ASRS Text

Title: A PVT PLT IN A CITABRIA LEFT THE RWY AND WENT INTO A DITCH AT MGC, IN.

Narrative: I FEEL THAT AFTER TOUCHDOWN AND DURING ROLLOUT A GUST OF WIND CAME FROM THE E GIVING ME A QUARTERING TAILWIND AGAINST MY RUDDER. THIS CAUSED THE NOSE OF MY PLANE TO HEAD S INTO THE DITCH APPROX 12 FT FROM AND PARALLEL TO THE RWY.

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.