Narrative:

At the beginning of takeoff roll; the aircraft unexpectedly veered to the left and hit fence.

Google
 

Original NASA ASRS Text

Title: GA PLT LOSES CONTROL ON TKOF AND STRIKES FENCE.

Narrative: AT THE BEGINNING OF TKOF ROLL; THE ACFT UNEXPECTEDLY VEERED TO THE L AND HIT FENCE.

Data retrieved from NASA's ASRS site as of May 2009 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.